Shortstripper,
Whereas I agree totally with you regarding aerobatics being art and the inner development, I stand by my post and I'll tell you why. (And at no extra charge!)
The initial post asks for advice, Cessna, Cap or Pitts. My reply gives a definite opinion and offers a further possibility, Stampe, Slingsby or Tiger Moth, with very experienced instructors.
Re. the Cessna Aerobat. Just take a look at all the other types listed in this thread and you'll notice that they are all types which have aerobatics in their design briefs. The Cessna does not. It is a very ordinary aircraft which has been beefed up a little here and there to be made 'capable' of aerobatics.
Furthermore, which of the other aerobatic aircraft have a yoke? None!
It reminds me of the Russian coach who didn't understand the question when he was asked what power setting he recommended for aerobatics. "Full Power, of course!" he replied, eventually.
That is to say, when I fly IFR I take an instrument equipped aircraft. When I fly aeros, I fly an aerobatic aircraft.
From what I understand of your post, you are yourself guilty of the beefing up of the Pitts reputation. It is neither as difficult to take off and land as is made out or as easy to fly accurate aerobatics in.