Either the TT or the Super Tiger would be my choice of those listed. I like the Super better. I have one to go into a Top Flight AT-6 someday. One other that I would reccomend, MVVS. They make a 77 that is real strong. Will put out tons of power on low nitro fuel. Quantum models and Morris hobbies sell them. With a tuned muffler they are an animal. I have 2 40's that are almost as strong as most 60's. Good luck with whichever one you end up with.

Mark Shuman