I just remembered something that's kind of funny and may explain some of the problems people are having with these units. As part of a demo in the store, the salespeople unplugged the CD player, pried the drawer open by hand and then picked it up using the open drawer as a handle. And then, to the amusement of all, started shaking the poor thing around in a very violent way. Yes, it did seem to work OK after all that, but I made damn sure to get one in a new, clean and factory sealed box. I hope you guys did too. Those little black boxes are really heavy.
Also, to expand on my first post as to the sound quality of the 508, I didn't really mean to put it down as a bad sounding player. I just found it a fairly boring player to listen to. It was one of those products that didn't do anything wrong. But that's it. Of course, thats just my opinion of it in my system. If you have one and enjoy it, keep it. Thats all that matters.