Detredwings, you brought up a very valid point, the "CJ glow" as we called it, is special, and does not exist on current models; they went to that sterile sound the reviewers decided was best. As we know, trombones sound "trombonier" and saxes sound "saxier" with these older CJ units; they seem to be especially voiced for jazz. While mods might give a better sound stage, there is the possibility of losing the "CJ glow".
I always come out ahead when I come to this forum for advice, while mods are a fantastic bargain in most cases, and could be in this case as well if you're not tuned to the elusive "CJ glow" that seems to be special for jazz.
Maybe after CJ see's this forum, they'll realize it's to their advantage to sell me the transformer.