The U Can Do is one plane that if you fly it fast you can rip the tail feathers off and you'll be out a plane.

It is mainly meant for 3-D or slower aerobatics and not for speed.

The engine must be mounted inverted and some engines are harder to start or harder to keep running in that position. (I'm sure some others will disagree with me on that)

If I were to get one it would be the 46 size with a .61 on it.

just my 2 cents