I havent flown either plane, but would suggest something of that ilk of the cub, high wing will be more forgiving. And being high wing doesnt make it boring by any means. I started flying glow, and have a Alpha 40 and escapade. Alpha was my trainer, but after a crash/rebuild I moved the CG back alittle and made it a flat wing (removed dehedrial) and it flys almost as sporty as the escapade. I love my trainer, I can fling it around the sky and really have tons of fun with it. And not worry as much about it. Super cub can be modded a ton I hear. I have 6 planes and am contemplating pickup a a LP super cub with the floats so I can fly off the water at my friends property we go camping at. I would proabably definatly mod some ailerons and running lights if I picked one up. Ive heard of plenty of experienced pilots picking up super cubs or other " beginner" aircraft. When they want a more relaxing flight or to take a break from their other stuff. Or like i said they get it to mod it and creat their own custom plane.

So I'm saying I dont think the super cub will seem as redundant as you think. You might progress quickly through the skills needed to fly a stock super cub, and then move on to a t-28 or whatever, but I bet you'll still come back to flying the cub or modifiy it to progress with your skills. fly it for a couple weeks as a 3 channel. and you can easily pop a couple cheap servos into it to add ailerons or flaps. or pick up the floats and find some water. 25 $ for floats is dirt cheap.