I bought an EGO 21" self-propelled back in 2015 at HDepot for $400. with a 5-year warranty (which pretty much explains a great reliable product.) Well after I believe after the 3rd year I had issues, called support and they replaced the unit. This device has been a dream performer. I have a small yard and on average takes me roughly forty min. to mow. After each use, I run out the battery when it cools, keep the blade well sharpened, and cut always at the 3" level. Off course like everything else it has drastically increased in price, however EGO will definetly be the brand I strongly recommend.
