Robot Cleaner with best wall scrubbing?

goody222

Silver Supporter
Feb 6, 2018
129
Chesapeake, VA
I've seen various posts about some robots having 2 vs 3 cleaning brushes. I've also read complaints that the "brushes" move at the same speed and aren't technically brushing, but others have a 3rd that moves faster. What models are known to perform better "scrubbing" of the surface, which is primarily what I'm looking for? Thanks!!
 
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