Doug! Welcome to RCU!

Really, you can't go wrong with any of the engines mentioned so far. I've only got Magnum .15s myself, but you really can't go wrong with any of the engines mentioned so far.

Just don't expect any of them to turn 17,500 right off the bat. You'll tear up the sleeve and piston. Ask me how I know. Better yet, don't Work 'em in slow and gradual. I flew the engine in my #1 plane all summer, in our weekly practice sessions and in competition, and it just hit 17,500 the last time I flew it.