Best CD player around $2000 new or used?


I'm looking to upgrade my Martin Logan/Sonic Frontiers/MIT system with a better CD player. Is an Audio Research CD-1 (used) good? How about Krell or Classe? Any recommendations?
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I found a wadia 830 here on Audiogon for under $2000 by posting a wanted. It is a wonderful cd player. Smooth, natural and as good as,or better than anything I've heard.
I love my CD1 and I understand the CD2 is better yet. the CD2 is selling in the range you are talking about and the CD1 is normally under $1500 used. Buy one!
There are many quality CD players on the market for $2000. I have come across a few Wadia 830's and they sound beautiful. If you can come across a Anthem CD-1 you should jump at the opportunity. The CD-1 is probably the best sound for the money. Also an SFCD-1 by Sonic Frontiers is nice. I have seen a few used SFCD-1's ranging from $1500 and up, in fact I have one on auction. If you are interested, feel free to contact me.