I've had my R8600 since December 23, 2017. Two years and one month old today!
It really is my receiver of choice if I just want to listen. I've had it side by side, at different times, with the following transceivers which I also own: IC-7300, IC-751AF, IC-7410, FT-991.
Something to watch, if you have reason to ditch yours off for a moderate period of time, is the on board lithium battery. It discharges after about a month or two. This is described in the manual where it deals with time set. Icom recommends connecting the radio to power for a couple of days every month or so to recharge the battery.
Happy listening!