I guess my favorite Ronnie was a mix between his best condition (98, ASC '01) and his stupid-hugeness in '03-'05.
For me, that would be between how he looked at the 1999 or 2000 Olympias. He was "fuller" in the '99 show and, IMHO, showed cuts that he didn't the previous year (albeit the fact he was actually leaner and drier in '98 ... all I can say to that is, meh ... something's to be said for extra size, be it actual raw tissue or glycogen).
He was smoother still at the 2000 Olympia, but by my eye, he was noticeably bigger and was still cut enough to ward off even the top competition of the day. (Aside: Kevin Levrone had to be kicking himself to not have the wheels he did a decade earlier. WTF happened there?!)
From that I guess I'd have to go with
Hulkster's default fapfapfap position 
I.e., how Ronnie looked in the '99 Olympia.
No offense, Hulkster. You came -- hahahahahha, no pun intended ;P -- by that choice honestly. And all bullshitting aside, while I probably disagree with you in the whole Dorian v. Ronnie debate, you made a great case for Ronnie as the true GOAT. I actually vacillate between who I think is the best Olympia winner ... in many respects, I think Arnold represents the ideal; on the other hand, a case could easily be made that Samir was actually THE most complete, and by a certain criterion, "best" Mr. Olympia.
Then you've got Ronnie and Dorian, which is a whole other can of worms. I think there's a thread for that, somewhere :?:
