Xiaomi H40 vs S40: H40 wins on suction and mopping, S40 wins on value for small hard-floor homes

The H40 pulls ahead with 4000Pa suction vs the S40’s 3000Pa — a real difference for carpets and pets — plus a bigger water tank and better navigation. The S40 is the value play: fine for small apartments with hardwood or tile, where lower suction isn’t a handicap and shorter battery life doesn’t matter. Pick the H40 for carpets or larger layouts; go S40 if you just need a cheap cleaner for a small hard-floor space.