I started with a 25FX and it flew it ok. I put a 46FX in it and WOW! Nearly unlimited vertical and plenty of power to pull out of flat spins, etc. I had a blast with it. Built it right out of the box without any mods to the wing incid. You will love it!

ps- get loads of speed on the first couple of take-offs until you are used to it. This will save you a tip-stall crash on the first flight. Dont ask how I know this!