It might be a little late to join this discussion, but I was thinking of replacing my KS3033s with 3035s or 3038s. Then I placed a meter of KS1130 IC between pre and power amp, and the system improvement was stunning. Music acquired a realism that I had never before experienced (detail, dynamic range, imaging, the lot) and the system is now so quiet that it seems to suck the noise out of the air between cuts. Now I am going to replace the hybrid KS1126 between CD player and preamp also with KS1130, and while I don't expect a change as dramatic as before, I expect a nice improvement. So I keep the KS3033s at least for a while since their warmth should compliment the drama of the silver ICs. All this has shown me the vast importance of cables to any system.