I used a Shark in 2020-2021during the pandemic.  We were renting a condo at the time.  It was a single roller brush and I liked using it.  It took a bit of maintenance, which was fine.  When we moved back home we purchased a robovac.  It did an okay job but it took an hour to do it…and I spent a lot of time picking things off the floor to keep it from having to go around them and it didn’t handle throw rugs very well.  So I bought this Shark with two rollers.  I can do the whole condo in 1/2 hour and that’s with moving things to get a more thorough cleaning.  Getting under the furniture is literally a push of a button on the unit.  The rollers do not clog or get tangled with hair.  Maintenance is, again, a push of a button to empty the bin.  That’s it.  Highly recommended.