Hi,

Well my opinion goes to the Tower Trainer too, because my first plane was a Dynaflite Bobcat with a GP 10 in it's nose. Well, that was not the perfect plane for a begginer, too underpowered it climbed very slowly and once in the air, although it flew smooth and slow giving a pretty good reaction time, every wind gust affected it's flight. Once a moderately strong gust made it end up nose-down in the muddy field near the runway I flew. Another factor is the landing. Since the glider is with the engine off (dead-stick) you have to land it at the first attempt.
Due to these factors, in my opinion, the Tower Trainer would be a better choice. Also, a good thing to do is buy a nice computadorized radio with 6 or more channels. This way you don't need to buy a better radio when you move from the trainer to a more advanced plane.

Just my 2c....