Well, it's a few months on and just in case anyone is still interested in this thread and the original question - here's my little contribution.

If you get a Super Cub, you'll get a robust model that you can successfully learn to fly on all by yourself - I did. It's also fun to modify. The first change I made was adding ailerons driven by the rudder servo which cost very little - rolls and inverted flight now possible. The next change was to 3S lipo battery power, still with the stock radio (minus the jumper that sets the BEC cut off voltage) and that cost some money for connectors and batteries and charger - now add fast take-off, Cuban 8 and vertical climbing rolls to the fun, plus double the flight time.

Next upgrade will be four channel radio (which I've already got), brushless motor and 30A ESC. The cost is now going up, but these extra parts will be re-usable in other models. I'll be converting the wing to carry two little servos (HiTec HS55), one for each aileron, and removing all the original electronics. Parts are on order, and I'm checking the letter box daily!

One down side of choosing the Super Cub is that the stock radio, electronics, servos and motor are not the sort of stuff you'd want to put into another model - at least not if you want to move on and up (please pardon the pun!) The servos are five-wire things that don't work with any other radio system than the stock one.

And that's all in my humble opinion, of course