See every angle,
before you buy.

Independent buying research built from published specifications, not opinions. Every figure traces to a manufacturer document or a standard - and when a manufacturer publishes nothing, PickPrism says so instead of guessing.

  • 384 products researched from published specifications
  • 1313 manufacturer documents and standards cited
  • 217 specification figures a manufacturer does not publish

Researched in full

58 guides · All guides

  • Pets Buyer guide

    What Size Dog Crate Your Dog Needs, by Weight and Measurement

    Which crate size a dog's weight actually maps to, why two brands' charts disagree at the same weight, and why the divider decides whether you buy one crate or several.

    Updated · 7 models compared · 44 sources · 6 specs not published

  1. 02

    Dual Monitor Arm Weight Capacity and VESA Fit: Seven Arms Compared

    Office · Buyer guide · 7 models · 20 sources

  2. 03

    Cordless String Trimmers: Line Feed and Voltage by Yard Size

    Outdoor · Comparison · 7 models · 19 sources

  3. 04

    Upright vs Canister Vacuums for Pet Hair and Hard Floors

    Cleaning · Comparison · 5 models · 18 sources

  4. 05

    Monitor Arms for Ultrawides: Weight Bands and VESA, Explained

    Office · Explainer · 8 models · 23 sources

  5. 06

    Wine Cooler Compressor vs Thermoelectric: Zones and Capacity

    Kitchen · Comparison · 6 models · 26 sources

  6. 07

    Roof Box Capacity vs Your Vehicle's Roof Load Rating

    Auto · Explainer · 8 models · 27 sources

  7. 08

    Rolling Tool Chests: Drawer Capacity and Steel Gauge Explained

    Tools & DIY · Buyer guide · 6 models · 24 sources

  8. 09

    Tankless Water Heater Sizing: GPM and Temperature Rise Explained

    Home · Buyer guide · 5 models · 21 sources

  9. 10

    Patio Heater BTU and Coverage Area: Why the Numbers Don't Match

    Outdoor · Explainer · 5 models · 29 sources

  10. 11

    SD Card Speed Class Explained: V30, V60, V90 and U3 for Video

    Tech · Explainer · 5 models · 24 sources

  11. 12

    Sump Pump Horsepower and GPM: What Your Basement Actually Needs

    Home · Buyer guide · 6 models · 15 sources

  12. 13

    Robotic Mowers: Wire-Free vs Boundary Wire for Sloped Yards

    Outdoor · Comparison · 6 models · 20 sources

  13. 14

    USB-C Hub or Docking Station: Which One Actually Runs Two Monitors

    Tech · Comparison · 7 models · 14 sources

  14. 15

    Managed vs Unmanaged Switch: Ports and PoE Budget for a Home Office

    Office · Comparison · 7 models · 30 sources

  15. 16

    IPS vs OLED Monitors: Panel Type and Refresh Rate Compared

    Tech · Comparison · 8 models · 18 sources

  16. 17

    Automatic Pet Door Size and Weight Capacity for Multiple Pets

    Pets · Buyer guide · 8 models · 26 sources

  17. 18

    Mesh Wi-Fi vs Range Extender: Which Fixes a Dead Zone

    Tech · Comparison · 7 models · 24 sources

  18. 19

    OBD2 Scanners That Read ABS and Airbag Codes vs Engine-Only Readers

    Auto · Buyer guide · 8 models · 29 sources

  19. 20

    Portable Tire Inflator PSI and CFM: Cars vs Trucks and RVs

    Auto · Buyer guide · 6 models · 25 sources

  20. 21

    Stand Mixer Wattage and Bowl Capacity: Dough vs Batter

    Kitchen · Buyer guide · 7 models · 21 sources

  21. 22

    2-Bay vs 4-Bay NAS: RAID Level and Capacity for Home Backup

    Tech · Buyer guide · 7 models · 20 sources

  22. 23

    GPS vs Bluetooth Pet Trackers: Range, Battery, and Subscriptions

    Pets · Comparison · 7 models · 30 sources

  23. 24

    Two-Stage Snow Blowers: Clearing Width, Intake Height and Power by Driveway

    Outdoor · Comparison · 3 models · 15 sources

  24. 25

    Battery vs. Wired Video Doorbells: Which Fits Your Home

    Smart Home · Buying question · 8 models · 28 sources

  25. 26

    Video Doorbell Field of View and Resolution for Full Porch Coverage

    Smart Home · Buyer guide · 7 models · 30 sources

  26. 27

    Soundbar Channels Explained: 2.1, 3.1 or 5.1 for Your Room

    Tech · Explainer · 8 models · 21 sources

  27. 28

    Wet/Dry Shop Vacuum Tank Size and CFM for Garage Cleanup

    Tools & DIY · Buyer guide · 8 models · 29 sources

  28. 29

    Self-Cleaning Litter Boxes: Weight Capacity and Waste Bin Size

    Pets · Comparison · 8 models · 32 sources

  29. 30

    Portable AC: Single-Hose vs Dual-Hose BTU and Venting, Compared

    Home · Comparison · 6 models · 21 sources

  30. 31

    UPS Battery Backup: VA Rating and Runtime for a Home Office

    Office · Buyer guide · 7 models · 38 sources

  31. 32

    Chest Freezer or Upright: Cubic Feet and Defrost Type Compared

    Home · Comparison · 6 models · 35 sources

  32. 33

    Fireproof Home Safes: UL Fire Rating and Capacity, Explained

    Home · Buyer guide · 8 models · 32 sources

  33. 34

    Robot Vacuum Self-Empty Bases: Who Actually Needs One

    Cleaning · Buyer guide · 8 models · 27 sources

  34. 35

    Jump Starter Peak Amps and Battery Capacity, by Vehicle Size

    Auto · Buyer guide · 8 models · 20 sources

  35. 36

    External SSD Speeds: USB 3.2 Gen 2x2 vs Thunderbolt and USB4

    Tech · Explainer · 7 models · 17 sources

  36. 37

    Hardside vs Softside Luggage: Which Survives Airline Handling

    Travel · Comparison · 8 models · 25 sources

  37. 38

    Carpet Spot Cleaners: Tank Capacity and Suction, Compared

    Cleaning · Buyer guide · 8 models · 17 sources

  38. 39

    Duplex Document Scanners: ADF Speed and Page Capacity, Compared

    Office · Buyer guide · 7 models · 24 sources

  39. 40

    Cordless Chainsaw Bar Length and Battery Voltage, Compared

    Outdoor · Buyer guide · 7 models · 24 sources

  40. 41

    Carry-On Luggage That Clears the Strictest Major US Airline Size Limit

    Travel · Buyer guide · 5 models · 29 sources

  41. 42

    Automatic Pet Feeder Hopper Capacity and Portion Size, Compared

    Pets · Buyer guide · 8 models · 25 sources

  42. 43

    Carry-On Luggage Size vs Airline Limits: What Actually Fits

    Travel · Comparison · 8 models · 38 sources

  43. 44

    Countertop vs Portable Dishwasher: Which Fits a Small Kitchen

    Kitchen · Comparison · 5 models · 24 sources

  44. 45

    Home Theater Projector Lumens and Throw Ratio, by Room Size

    Tech · Buyer guide · 5 models · 34 sources

  45. 46

    Smart Lock Keypad vs Fingerprint vs App Entry for a Rental Property

    Smart Home · Buyer guide · 8 models · 40 sources

  46. 47

    Cordless Drill or Impact Driver: Which to Buy First

    Tools & DIY · Comparison · 8 models · 28 sources

  47. 48

    Countertop Dishwashers Compared: Fill Method, Fit and Cycle Time

    Kitchen · Comparison · 8 models · 23 sources

  48. 49

    OBD2 Code Reader or Bidirectional Scan Tool: What DIY Repair Needs

    Auto · Comparison · 7 models · 19 sources

  49. 50

    Espresso Machine Pressure and Boiler Type, Explained

    Kitchen · Explainer · 7 models · 26 sources

  50. 51

    Leaf Blower CFM, MPH and Newtons: Gas and Cordless for Large Yards

    Outdoor · Buyer guide · 5 models · 14 sources

  51. 52

    Countertop vs Built-In Ice Maker: What a Home Bar Needs

    Kitchen · Comparison · 6 models · 18 sources

  52. 53

    Robot Vacuums for Mixed Carpet and Hardwood Floors

    Cleaning · Buyer guide · 8 models · 24 sources

  53. 54

    Neutral Wire or Not: Choosing a Smart Switch or Dimmer

    Smart Home · Comparison · 8 models · 15 sources

  54. 55

    Portable, Standby or Battery: Home Backup Power Compared

    Tools & DIY · Comparison · 6 models · 22 sources

  55. 56

    Single or Dual Channel Dash Cam: What the Specs Decide

    Auto · Buyer guide · 7 models · 25 sources

  56. 57

    How Many Mesh Wi-Fi Nodes Your Square Footage Actually Needs

    Smart Home · Buyer guide · 6 models · 19 sources

  57. 58

    Dehumidifier Sizing: Matching Pint Capacity to Your Basement

    Home · Buyer guide · 6 models · 16 sources

New guides publish when the research is finished, not on a schedule. RSS

How we know, and how we don't

When a manufacturer does not publish a number, we print Not published and leave it there. We do not fill the gap with an estimate, a review quote, or a guess.

We do not physically test products, and we never pretend otherwise. What we publish is research and analysis, kept separate from anything we could not verify. The full method, including its limits

Found a figure we got wrong? Tell us. Corrections are published and dated, and they take priority over everything else we do.

  • Trade-offs stated. Every pick names who should skip it, in the same block as the buy link.
  • Weighting shown. Each guide publishes which specifications it weighted and by how much, so you can disagree with it.