Hey all, I've searched ad nauseam on the Tower, GMS and SuperTiger 75 engines looking for something to pep up 40 size full fuse 3D planes in the 5-poundish range. I'm looking to turn an APC 13x4 (I just like APC, anything better in this size?) with good throttle response so an engine with good torque is probably what I'm looking for. I have considered 90s but I think that's too much, it might even weigh less and all that but there can be too much power where manuevers other than rocketship straight up are limited to small throttle ranges and thats no fun to juggle.

Lighter is probably better but I'll leave off cowl, wheel pants, spinner, prop weights currently used to balance 46 etc... so should be no problem. So ideas? So far I like the Tower 75 becuase its on sale for 90 bucks, is ABC for quick breakin, has a good warranty, but I saw someone mention the Supertigre because of better torque so I'd like opinions of the 3d flyers among you. Thanks.

I do have a Saito 91 for one of the planes but I really want to try a two stroke to see the difference myself.