ECOVACS Deebot 601 Robotic Vacuum Cleaner

I'm going to keep this short and sweet. I have had 3 DEEBOT N79s over the past 2 years. The first two I bought during Black Friday and they both worked flawlessly for 9 months. They literally changed our lives (and socks) in terms of dog hair on our floors (2 dogs, a lab and a pug/boston mix). The first robot died under twelve months so I got a free refurbished replacement (that makes my third) with no hassle (Kudos to Ecovacs on this!). This refurbished one lasted a little over a year before it too died. I still have one of the original ones that I purchased during that Black Friday and it's still going strong, but now I'm down to one robot. Just to be fair, I change filters and brushes semi-regularly and I do clean the brushes but I could afford to be a little more diligent on this front. Since I was relatively satisfied with the N79, I thought I would try an upgrade to the 601 with perhaps better navigation features. Unfortunately, I was wrong! It's not better in terms of features and it gave me more grief than it was worth in terms of price with a constant "tangled brush" error every 5 minutes (no hair in the brush whatsoever!) and periodic shutdown of brushes and vacuum. Needless to say, I'd have to babysit this thing if I wanted get the floor done. Perhaps it's defective but I'm not wasting time on finding out with another one. Furthermore, I can't recommend the "new" Ecovacs Home App either (Why does it need permission to make phone calls!? It's a robot vacuuming app for goodness sake.) All in all, I can't recommend spending any more money above the N79. It gets the job done, i.e., vacuums autonomously while collecting dirt and hair with little to no errors and manages to find it's way home 7 out of 10 times (depending on how complex the area is). Anyway, this is my experience, but the choice is yours to make.