Updates:
After few surveys finally decide to go with xiaomi 1t model STYTJ02HZM (aka xiaomi mop 2 pro+), due to bigger battery capacity and multiple maps support

Satisfied with its suction and battery, able to do vacuum and mop for an 50m2 area (total 100m2) and still have 1/3 battery left after that. Usually just set the suction at silent/standard level is enough to clean my house, rarely use strong/turbo since I don't have carpet. Rarely collide with wall or furniture also.

For mop function don't expect it will do a perfect job if there's dry stains on your floor, will need to clean self manually. Another thing is that I might made a mistake about saying this model has multiple maps function. So far I did 2 full vacuum on same area and able to perform room edit & virtual wall function but it doesn't show "save map" or "map list" option, not sure if it need to do few more runs, will update if it make changes later.