Currently running all of them.
iLife A4S - gets caught because I forget to pick up my high pile rug / don't have enough magnetic strips to put under it.
Shark RV700 - no concerns with 2 of these units.
Shark IQ with auto-empty base - my favourite because I don't have to empty it, and this is the only mapping one I have.
Roomba 800 something from costco - Double rollers never get hair tangled but the plastic bumper misaligned recently after 3y of use. Was wondering why it wouldn't run anywhere past 10ft around the base, going in circles. Pushed the bumper back in and seems to be good so far.