ORIGINAL: CGRetired
I flew the Tiger 60 as my second plane for about two years. I started out with an OS 61 FX. It was a great engine with lots of power. I bought it at an estate sale and it really needed bearings, so after a few months of flying it that way, I swapped it out with a Super Tigre 75 and a tuned pipe. WOW was all I could say for that combination.
CGr.
The Super Tigre .75 is one of my favorite engines. When it is right it is a real treat. I have one on my GP Big Stik .60 turning a 14x4W, and another in a Phoenix Strega turning a 10x10.
I know odd props for those planes and this engine but they fill the purpose for me very nicely. The big stick is slow but a monster ( 20mph winds are best

) and will nearly 3D on high rates and hovering with this combo is easy.
The strega is insanely difficult to fly full throttle ( for me at least..... dual rates were a blessing...*note to self* faster means less throw) and landing takes a bit of work.... but if you like fast.......
I do not know all of the numbers like a lot of you guys do, but I can tell you that power is power and fast is fast, and when they are tuned right the ST are nice engines.