Roborock QX Revo Max vs QX Revo Ultra 2 (comparison)

A free buyer's comparison guide from Best Robot Vacuum (bestrobotvacuum.io). Roborock QX Revo Max and QX Revo Ultra 2 are Costco-channel robot vacuum and mop models that both list 25,000Pa suction, spinning-pad mopping, self-cleaning, self-drying and obstacle avoidance. This comparison explains where they actually differ. QX Revo Max is the safer default pick, with LiDAR navigation and self-emptying listed. QX Revo Ultra 2 is the mop-care upgrade, with hot-water mop washing, warm-air drying and dual anti-tangle brushes. The article covers suction, navigation, mopping, dock automation, hair handling and Costco buying logic, plus a spec table, and lists what to check before buying. Not affiliated with Roborock or Costco.