try samsung navibot, it makes the house super clean.
I almost bought the crazy okusano before deciding on the samsung navibot. Okusano was Rm900 it's noisy, it's kinda stupid like a cochroach losing it's head, keep banging the wall.
I've been using the samsung navibot for almost a year now and no complaint so far, infact I have actually ignored it and it's still doing its job best
[WTS] terraBot BL21A