I bought it to replace an old panda (it worked for 3 years, was taken to the country), and I was shocked by its smoothness - when it detects an obstacle, it slows down and tries to carefully bypass it and vacuum it. Roborok is 2 times quieter than a panda! We are very satisfied! Oooochen liked the fact that dusty fotaket new obstacles! I can always see who left what on the floor! Washes (wipes) the floors every 2 days according to the schedule + every two weeks with my Karcher steam mop. I chose between ecowax T9 and Roborock S7 (I didn’t wait for T7S PRO - I would probably buy it!) In the end, I decided to buy a proven version !))) I recommend to purchase 100%! It is worth every spent!