RE: Edge 540s for 3D
If you are looking for precision and 3d, you may want to look at another plane. The edge is a great plane, and about as good for 3d as you can get, but for precision, it suffers some. The rolls have a bit of wobble to them, stalls really don't have a break, you have to force it into them, and a few other wierd things. Don't get me wrong, I like the airframe (in fact, I have a 100cc 35% Edge), but Extras are more versatile.