Let me put in my 2 cents. I was able to fly a couple of the first prototype AirCore .40 Trainers. Heavy, yes. Put a .45 or .46 on it, and its great. Able to take LOTS of punishment, YES. We intentionally would crash them from 10' to 20' (nose down). Broken props by the bucket load, but the plane held up. If you have ever seen the advertisments that show the plane on cartwheeling down the runway, we did the same thing (Thos pics might even be the ones that we did - too many years have gone by). We even had it on vidotape trying to trash itself. Five minutes later, it was flying again. Basically it is a SPAD. It does like to eat up a lot of runway - larger wheels will help, and it likes to land a little fast, but who cares. The Airmadello is also a good plane, but the aluminum channel can break if you try to straighten it after a bad crash. If you want a plane that can take massive punishment, go with the AirCore. Personally, I'm still a balsa person, but am getting into SPADs a little more.

Success Guarantee: You will learn to fly with this trainer or
US Aircore will replace it with another US Aircore trainer.
All this is assuming that the modeler learns to fly under the
supervision of a club designated instructor at an AMA-sanctioned
field. This is also assuming that the airplane is assembled as per
the instruction manual. This guarantee is effective for 60 days
after kit is received.
This is from the Tower website - you can't go wrong with this!!