I just made the change from SL-3's to the CS 2.4's. Mostly based on listening room size change. No longer had the rear space for the ML's. I demoed the 2.3's side by side w/my SL-3's in my home. They both image really well but i preferred the bass on the 2.3. The integration of bass always bothered me on the ML but i still love the sound. The 2.4's are still breaking in but are truly great, imo. good luck.
Martin Logan vs. Thiel
I have a pair of Martin Logan Ascents and I'm in the mood for something different. I'm missing that tweeter sparkle you hear on cymbols etc and was thinking of making the move to a Thiel 2.3. I've heard that they image and offer as much detail as the Martin Logans. Do you guys agree? I know people say they may sound bright in some systems but I'm running Goldmund and Classe so I don't think that will be a problem, but will the Thiels image and soundstage like the Logans?