RE: Basic question: aerobatic planes
Jigeye
If I may, I'll offer another alternative. If you are currently flying your trainer you might consider an "intermediate" plane as your second as opposed to a Scale Aerobatic plane. Not that one couldn't go to something like a Chipmunk - a Carl Goldberg Chipmunk was my third plane- but a plane like a Goldberg Tiger or Sig Four Star are excellent 2nd planes that will get you into the air quickly and are an easy and enjoyable transition from trainer to introductory aerobatics.
My second plane was a cousin to the Four Star- a Mid Star: It had a mid/shoulder wing with either a symmetrical or semi-symmetrical wing and would easily do most of the introductory aerobatics. When I stepped up to the Chipmunk it was easy.
Both the planes I suggest come in 40 and 60 size, can be purchased as ARFs for bargain and will be a lot of fun to fly. Forgiving yet capable.
Dave Michael