Since your main intent is good oled 2 channel stereo, then your bucks would be better spent on a two channel amp/receiver.

I know your aprehension about buying used and I can agree when dealing with unknowns like on ebay. This site, http://saturdayaudio.com/ , however, has some great stuff on their used pages that will suit you perfectly. They have been around for years, guarantee thsir stuff and know hoew to pack and ship. I've bought from them myself. I see some NAD, Denon and Pioneer stuff on there that should pique your interest.