Had one for about 2 weeks, but ended up with the digital Onkyo LR552. No real complaints about the Yamaha, but the Onkyo seemed to go better with my setup.
Well, I can give you my impresions from the short time I had my 5860.
Fairly easy set-up. Didn't like the remotes layout, too crowded for my taste. Listened to several movies to test out DD5.1, DTS, PLII and stereo performance.
I was trying to decide between repairing my HK AVR300, the Yamaha HTR-5860 and the Onkyo LR552.
Overall, I would say that the Yamaha is a solid verall performer. I couldn't really ever get the center channel to sound "right". Stereo performance was very good.
Since I'm more into DVD movie playback (about 80%)as opposed to listening to music, I ended up going with the Onkyo as it sounded better with movie soundtracks than the Yamamha did.
But, had I not gotten such a good deal on the Onkyo I likely woudl have stuck with the Yamaha.