I can't speak for the rest of the CJ lineup . I have had a CT 5 for over 5 1/2 years and am more than satisfied and cant think of any reason to change. Any meaningful improvement would take me to a GAT @$25k. No idea if the ET 5 is a better preamp and have no real interest in finding out.
Cheers
Pradeep
Cheers
Pradeep