I had and really enjoyed a full Kemper rig for almost a year, however, having it right next to my amps and A/B'ing them, along with integrity concerns resulted in moving it along and going back to amps - which I'm really happy with; however, I cannot get the Kemper off my mind recently and even dreamed about it last night (!). WTF?!?
In the time I had mine, I had a screen-glitch at start-up, along with a frozen boot-up and it really got me questioning what does one do with such a device after having it for years and something goes ka-poof? My amps I take to a tech, even those which are decades old and they get fixed right up.
Since selling mine I've purchased a Boss Katana (read: Kemper Lite) and have been gigging a lot with it this year to great results, as well.
Nevertheless; I miss my Kemper Morgan AC20, Trainwreck and Bloody Rocka profiles like crazy and it also often gnaws at me that I have so many purchased profiles just sitting. ...not to mention I think the Kemper is just pretty to look at.
Getting back into the game also presents the used market challenge, where used prices are simply too close to new to justify picking one up that way. ...coupled with my hardware integrity concerns which would be non-warrantied in the aftermarket.
Anyway...there...I've thrown my thoughts into this forum...