Ok, I've decided to go with the saito 100. I thought hard about the tower 75, but I know I would have wanted the four stroke and got it anyway sooner or later. Thanks for all your help. I do have another question though, I bought the dx7 for this plane, and it comes with a four cell 11 or 1200 mah reciever pack. What do you use for a reciever pack. I plan to use the seven servo setup, I'll just buy 3 more servos that match the ones that came with the radio, unless that's a bad idea. Thanks again.