Congratulations on getting putting together a system you enjoy. If John Zimmerman is the gentleman I believe he is (he has impaired vision, doesn't he) you happened into an outstanding dealer IMO. I have not been there in many years (nor to any audio dealers for that matter since I buy virtually all my gear through Audiogon), but I do remember him very well - My overwhelming impression was of a dealer who had great passion for music and products that reproduce it best. I know exactly what you mean when you said his interest was not in the sale as much as in listening to your needs and sharing the passion. I would have to say that was my experience of him as well. I have a few friends and acquantances who have developed similar respect for John, and continue to go back to him for all their gear. Good on'ya! I'm going to have to go back there sometime soon!
I've done numerous ABA ABC comparisons of tube and SS gear over the years. Heard some pretty outstanding gear in both realms. At times I've been impressed enough with SS to want to try it again, but whenever I do the A/B Tube/SS thing to really give it a fair shake, or whenver I've actually purchased an SS piece to live with for a while, I always end up going back to tubes again. I consistently have preferred tubes to SS. Distortion or not, it just sounds better to me. I remain open to change, but for now tubes are where it's at for me.
Marco