if you are a private pilot and you just want to do minor aerobatics your best bet is to build yourself a RV. I personally like the 6 and the 8 but for just aerobatics a RV4 would prolly be the best, due to the tandem design. Sure a RV8 is tandem but its a little bigger and heavier, although not by much. Besides RVs are just oh so fun to fly.