Single disc or multi?
If you connect the player to the digital input on the Yamaha it won't matter what CD player you get, so long as it holds together and doesn't have read errors. You could look just about anywhere for a good disc spinner. I personally like the old Magnavox CDB series players with swing arm transports. I like them because they track well and they have good build quality (Belgium made). Many of them also sport a Coaxial SPDIF output. It is worth note that Philips also has CD players from that era that have the same features.
Now there are pitfalls to the old Magnavox/Philips players. They are hard to find in good condition, some of them are downright ugly, and they are old. I have two and both have some cosmetic flaws, but both perform as if they where new.
I realize that you aren't likely to be interested in such a player, but I like to save bucks.