I learned on a 40 sized Tower trainer also, and it flew great! Mine looks much different now :-). Lots of new balsa and ply, new covering, a just a little bit heavier :-). They are very easy to fix--as most trainers are--even after what seems like a total distruction. They are great! They fly well, and depending on how they are setup, can be either gentle fliers, or fairly aerobatic. With the contols set low, they are easy to control and great for beginners. Crank 'em up, and they can do almost all the manuevers. The only thing I could not do with mine was knife-edge! Not for very long anyway. Did I mention I think they are great?