I just got my receiver from them about a month ago. I got the refurbished Onkyo SR608. The first one they sent me had a few problems. The onscreen menu would never pop up, and the volume was low (even when turned WAY up).

I emailed them, and they sent out a replacement with a prepaid fedex return for the old one. The new one I got works perfectly. All in all, it was a good experience and I got an awesome deal.

Just remember to keep your original packaging if you need to return the unit for some reason.