Buy Timo's two-plus! That is a fair price IMO, and low if it has HDCD. No affiliation whatsoever....don't even know Timo other than previous posts. My bias is having owned a two-plus for many years. Great DAC for $500. Check out the review on Soundstage. Keep in mind the technology is older, but having done some comparisons with later redbook players including my Model 9 (player), it holds up quite well. It is still the DAC in my home system (no longer my reference -that is at work now - but I'm not likely to compromise much in my secondary system). Yep, I guess it's a very biased opinion, so take it with whatever dose of salt you like.
Marco