I've been following your thread since your first posting, and I have read every post so far. I'm glad to see that you have the courage to push back against the crowd of nay-sayers that seem to assume that every diver is new and inexperienced (always much less experienced than they are). Even some of the divers offering recommendations have half as many dives as you do. Many vocal members of Scubaboard seem to have a distinctive "anti-PADI," and more generally an "anti-training" bias (unless it's with GUE, which has a large following here), with the assumption that all instructors and agencies are just out to "get your money." Or that people that want more training are just "card collectors."
So, I'm with you, I don't exactly get it. It seems that a diver could actually realize that his improvement has stalled out, and want to get feedback and additional training. Some of my recreational dive buddies have well over 1,000 dives, and still dive with poor technique, particularly because they have never been trained properly. They are content to "just dive;" however, that is not helping them to improve.
In my case, I followed the path up through PADI DM, and through that experience realized that teaching was not for me. About that time I took a GUE Fundimentals (of tech diving) course, and realized how deficient my diving was in technique. I can assure all of the "just dive" advocates here that if I had stopped after DM and "just dove," I would have done nothing more than further ingrain poor diving technique. So after that course, I began to have some more concrete idea of "good" technique, and decided that tech diving was the way to "improve."
I ended up following the NAUI technical diving track, primarily because my local dive shop had NAUI instructors and students. Whether with NAUI or GUE or some other agency, I would highly suggest you look into tech diving. Your first step would be to take an "intro to tech" or "fundimentals" class, and then you could decide if it's for you.
The only thing that worried me about your postings was your comment about "adrenaline junkie." I can understand that diving may have its moments of "adrenaline rush," and your opportunities to obtain those "adrenaline rushes" may be greater in tech diving. However, tech diving is not friendly to risk-seeking behavior. A tech diver's goal is to avoid those particular adrenaline-producing situations by careful planning and skillful execution. In other words, if you are looking for classes to challenge you and make you a better diver, then look into tech diving. If you are just looking for a rush, then I wouldn't suggest looking for it in diving.