I'd like to add that I'm not unhappy with the system as is, although I will likely upgrade the CD. I love the Thiels and these are the cornerstone of the system. I have always liked the Thiel sound. I suppose I'm looking at optimizing the system as simply as possible. Getting a new CD or DAC seems to fit the bill. Your suggestions are much appreciated.
Order of importance
I recently upgraded my system to Thiel 2.2, CJ MF2200 and CJ PFR. I went back to using my old Denon 1520 CD player from a new DVD. I was told by a salesman that the order of importance in a system is 1)speakers, 2)source, 3)preamp, 4)amp. Therefore, I was told to buy a new CD or use the Denon as a transport and get a DA converter. Any thoughts on this and what DAC to consider?