I have been looking for a robot vacuum cleaner for a long time, and after my recent back surgery, hand vacuuming was not easy. I bought this vacuum cleaner and am very satisfied. Its sleek design gets under dressers, beds, other furniture and all those hard-to-reach places I couldn't reach with a handheld vacuum. It makes a very little noise during use and to be honest I don't even understand how it works as the sound is nice (not loud at all). The price is less than $200, and replacement filters are already very cheap.