Hm. I looked at this post with some interest, and thought about your claim of "provincialism". Then I looked at your public profile. Know that this is by no means a criticism, only an observation, based on what I'm presented with. In your profile, you state you've studied the following:
Arnis, BJJ / MMA / Grappling / Wrestling, Boxing, Choy Lay Fut, Escrima, Hung Gar, Hwa Rang Do, J.K.D., Judo, Jujutsu, Kajukenbo, Karate, Kempo / Kenpo, Northern Mantis, Southern Mantis, Systema, Tang Soo Do
So your screen name seems adequate, Karatedrifter.
I wonder if provincialism is really a reason to leave a system, or if you're what my sensei calls a "collector"...going from one thing to the next, not mastering any one thing, but picking up the basics of a few of them, then getting bored and moving on.
Seems to me that most styles are "provincial", in that they feel that they have developed the best way to defeat an opponent.
As far as the styles listed, all three are solid. I've studied shotokan for 20+ years. I have some time invested in the other systems as well, but my home is shotokan. My advice is not to "style shop", but to find a good instructor that you think you can learn something from, and go from there.
Once again, please know that this is not a criticism, only an observation of a possible scenario.