cd player upgrade

I'm looking at finally dumping my Adcom cd changer for a quality single disc player. One of the players that has piqued my interest is the Cambridge 640C w/dual Wolfson DAC's. Would this dual Wolfson DAC player render my external Lite Audio DAC60 w/pair of Amperex 7308's pointless? If so, should I look towards something like the Music Hall CD25-2?
Depending on your tastes, you may want to keep the dac around. Also consider the onkyo 7555 in this price range, I think it is a better buy than the cambridge, more reliable and will make a great transport for your dac.
Having owned three Cambridge players (including the original 640,) I'd say they have a definite house sound which may or may not be your cup of tea. They are a good value soundwise, but I think they are a bit analytical and reserved sounding. The 640 made a great transport though. If you're looking for a good value, is selling the Onkyo 7555, Marantz SA8001 and Marantz SA8260 players for deep discounts. I'd rather have either of those players than the Cambridge myself.
You might also consider buying a used Oppo DVD player here on the 'Gon. Have read the CD section on one of the models was decent. Plus you'll have a back up if your current DVD fails.
I settled on a German-made reference CD player after testing and owning many, many players including Cambridge, which I find to be excellent values. In this case you will get a brighter sound than the Adcom. I do like the Wolfson DACS for bass. The Adcom players still stand up pretty well in my opinion, though you will gain inner detail in this respect. I suspect the Cambridge will be better as a stand alone than with the DAC. Dual DACs seem to make the sound more organic. The Music Hall is a nice player. Does everything right but not in spectacular fashion. Oppo players do sound good but won't run with a great CD player. You might consider a Rega Apollo or Saturn. The good news is that there are some good players around on the used market that can be had for under $1000 that will do about 90-95 percent of what very best players can do. But those last percentage points in quality get very pricy! If you have that champagne ear, save up and watch for a good used bargain. You can sometimes find various Wadia players for $1500-2,000 or so. The trade off is that there may not be parts readily available for some of the models. But since they are built well, I see them as a reasonable gamble. Check with Steve at Great Northern Sound about parts availability if you are not a gambler. Getting your source right is important. You just need to consider what your goal and satisfaction level will be. If you know you are going to want reference quality, you will save money in the long run by making the big leap rather than shuffling through player after player to get "there." While I have audio regrets, I never regretted buying the best I could find and afford.
Guys, thanks for all of the tips. You've really given me something to think about. I'll definately look into your suggestions.