The Twist is more of a funfly type of plane. It can fly fast or slow. It 3D's fine, just does not look graceful due to the short coupling. You can fly fast or slow, no problems here (make sure you seal the hinges). Landings are a breeze. The main thing to worry about is it builds tail heavy. It will fly fine on a 46 but you may want to put a 61 on the front for weight (I flew mine with a 52, had to put 5 oz of lead on the nose to balance where they recommend. I ended up removing the weight).

The Funtana is more of a 3D type of plane, one I would definitely not fly too fast. I personally do not care for the 40 sized one, the 90 sized one flys much much better (I think its because of the lighter wing loading). It has a tendency to fall out of the sky when flown slow (probably the setup). It will fly fine on a 46, but hover requires at least 3/4 full throttle. Landings are not too bad.

It boils down to which way you prefer to fly. I do believe the Funtana will do more for ya....