Ah taildraggers, interesting beasts.

I'd agree with others that the Cub is most definitely not a good trainer. Initially it seems like it should be, but it's not. When you're learning R/C, orientation is the key concerm and the main challenge, IMO. You need as little trouble with "managing" the plane (speed management, coordination, etc) as possible, you will already be busy keeping straight on the basic control inputs (not "should I add some more rudder?", but stuff like "LEFT OR RIGHT????? AAHHH!!!!" ).

However, as I've said before, Cubs make awesome "second trainers". Once you've got proficient at the trainer and maybe a sport plane or two, you can get a lot of valuable experience from a Cub. I always thought my Tiger flew fine with no rudder input, but after getting used to my Cub, I find myself constantly using rudder on the Tiger.

The Cub also rewards consistent patterns and smooth, coordinated flying. It just begs for scale-like flight.

Once you've mastered the basics on something simple, a (reasonably accurate) Cub will almost certainly make you a better pilot.

-Matt Bailey