For me it's the pure Nashville styled hard country when he first committed all out to country (1968-1969?) and the horn driven style of "Southern Roots". I love the early rockabilly stuff and other variations in backing instrumentation, but not as much as the other two.
I also really enjoy just Jerry with his piano. Too bad the trends in music
toward acoustic etc. wasn't in vogue in those days. It would have been great to see him do a complete solo, one-man show type of tour once in his life. I'm sure his showmanship would have come to the fore and been a sensation.
What was it like in his post concert hotel jam sessions?