The props I was using was a 11x6 and a 11x7. The 11x7 was of the new evolution props, they are great. I think you will be happy with either but I would go with the 11x6, less on the engine and the transition is a little smoother.

jimmyjames213, thanks for the input but you will be surprised what the evolution pts motor will do. It is a .45 engine but it will turn that 11x6 engine with a smile. I tried a 11x6 on another engine .47 supertigre and it about killed it. Most .45 will take a 11x6 so he should not have a problem with a 11x6. I was actually getting around 12800 on the ground with my 11x6 prop. This engine has lasted me 5 years with this setup, I do have it on the self as of last year because my bearing started acting up after about 1million flights. Seriously I have about 400- 500 flights on this engine if not more I lost count and just now had a problem