Ok IM only gona say this one time 4stokes are best for 3d because thay have a mid range torke that 2 strokes can"t get.If you want top end power than 2strokes are the way to go.the ucd like 4 pich props that gives low gear torke whith no speed so you cant over speed it well all most a blender at full power will defantly blow it up.

I have been flying my 46 size whith a 100 satio for 7or 8 month"s and love it climing inverted flat spins cartwheels are just a few power hungry moves that it well do
REMEMBER WITH GRATE POWER COMES RESOABILITY TO USE THE LEFT STICK WITH RESPECT!!!![8D]