The Saito72 is slightly lighter than the Pro46, but pretty much equal to the 46FX and AX. The Mag61 is actually lighter than the TT and OS 46 2c's so I wouldnt worry about that.

baxternick

Have you checked out the new Mag XLS 52 2Stroke? One of the guys I fly with is getting one for his Phoenix Sukhoi. How much does your Giles weigh? I have the Sukhoi with a Pro46 and APC 11x5 prop and its a rocket, I also tried a APC 11.5x4 and it slowed down alot but gave it a little more pulling power, I tried a 11x7 MA wood prop, but didnt like it very much, I went back to the 11x5 APC.