I would say go with the extra I am finishing my 5th gp extra 40 now and have a build thread on here but am at a stand still due to work, maybe this week I'll be done with it, I also have the cap 232 now thats flying and it is a good plane too but it does have dihedral built into it where the extra doesn't, that cap doesn't seem to do inverted quite as well but does do it good enough though, extra is better for aerobatics from my opinion. I have also done mods along the way and I have incorporated them all into the new one that have had the best results for me, you can see them in my build post.

my first gp extra I had was built in 1996 so i've been flying them since then and as soon as one goes down i get another and put it together, I usually go ahead and buy an extra kit just in case