Do not pay attention to horse power ratings on these engines. The manufacturers get those ratings with the engines running at rpm's that would cook the engien in just a few flights. The numbers are WAY over rated, and if Tower happens to get theirs at a slightly higher rpm than TT....

If you look at engine reviews you'll see that peak torque occurs at much lower rpm than peak HP. What really matters is the torque rating, and unfortunately they don't give us that.

Go with the TT. Unlike the TH and many others, I've never read anything bad about the TT 46 Pro.
Dennis-