I started learning 3D on a twist 40, with an os 46...progress was slow. I put a saito 82 on it, and it became a brand new plane. I loved it so much, I didn't want to trash it learning...therefore I started looking at profiles. (The twist will not handle any ground contact, which will likely happen during training!). I selected a mojo 60 and planted a saito 100 to give profiles a whirl. I haven't flown my twist or showtime since.
The mojo seems to be nice and cozy hanging from the prop and will harrier around with little elevator. The one disadvantage I can think of for the mojo is you have to build it (unless you are willing to wait until the end of the month or later for the availability of their ARF, and the ARF is only available in the 40 size). Go to
www.swanyshouse.com to check them out. Paul Swany will answer any questions you have via email very promptly.