One thing to keep in mind about the cub, and being "boring". When you feel comforable with it and it gets to the point of being "boring", you could easily cut ailerons for it and add one servo, or move the rudder servo to the ailerons. Then it would feel like a whole new plane for the price of a $13 servo.
In this hobby it's easy to make minor changes to a plane and make it a whole new ball game.

GunfighterII is dead on with regards to the wing loading. Example a high wing/low wing load plane will take off/fly/ and land at a very slow pace, because the stall speed is much lower.--The plane has more lift and doesn't need alot of power to fly.

A low wing/high loading plane will need to truely be flown. There's not much forgivness here. It has to fly faster just to stay in the air. And if you drop the speed too much, it goes into a stall-quick. Drops like a rock. Also when landing you have to bring it in much faster so it won't stall.

I would always recommend a high wing to a beginner because they are much more forgiving. I have seen a few people spend 200-300 on a low wing warbird, crash, get upset and never fly again.
Don't over look the areobirds to fast. The Challenger is a great plane. Not a scale look, but flies great. On a day with 15-20mph winds, when my other planes may be grounded, I always know the Challenger can fly. A small shim under the back of the wing and your golden. If you do get one of these, check out the mods to do on it first. Some good stuff.