I can't imagine paying the massive extra premium for ................... (b) a monoplane with a big engine (c) a VP prop
And how do you get on in aerobatics competitions then?
The simplest single seat Pitts are quite cheap. However, after a while you may want to progress beyond LAROSA (Loops and Rolls on a Sunday afternoon).
What can you do with a single aileron, fixed pitch, single seater? It will be limited in its competitiveness, you cannot take people up for LAROSAs etc. It is good fun for going up and playing around, but you may get tired of this.
Thats why people have two ailerons , CS props etc to improve their competitiveness in aerobatic competitions.
There are also two seat versions for those who want to make their mates sick with LAROSAS.
The monoplanes are generally regarded as more competitive
However these all cost more.
So unless you want to be selling and buying again within a year or two, you should think about what you will want to do and spend the extra money up front.
Beware though, flying aerobatics will spoil you, flying straight and level in a Cessna or Piper will seem very tame (boring?) so there will be no going back
ZA