twn

I am currently throwing my twist 60 together. I was going to slap my magnum 91 (4c) into it but some peeps here claim that for this plane the magmun 91 is rather underpowered. I really don't want to spend 300 bucks on a new saito 100. (just got an 82 for my SSE) So I figured on grabbing a cheap super tigre 75 or 90. Does any one know if the 75 will do the job? Or should I be looking at the 90. I want verticle power.

I can get an os 91fx for $200. I might even go this route. What kind of performance difference is there between the st g90 and the os 91 fx?

Also I'm running hitec 475 all around at 6v. Will this be enough servo for this plane and a 75-90 size engine?