Hi capt17,

First of all, Welcome to the Hobby/Addiction , its a beautiful hobby and wish you the success in it. I'm very new in this hobby, for the last nearly 15 months I have been flying. I have used Evolution PTS .45 2C engine, engine screams, its good and its chinese. As far as O.S. is concerned its expensive but it doesnt need to admire cos everybody knows its a great engine with great price. I'm sure you are planning to fly a high wing plane of 40 size, its a good size. I got a chance to buy a used ASP engine which is .46 two stroke engine. I installed that engine on my 40 size trainer and man that engine was screaming on 10x6 APC prop. It even gave me 40 to 60 feet vertical, unfortunately one of my friend lost that plane in the air, during flying he just took radio from me and just started screaming I lost the plane, He couldnt keep the track of it, and it was lost and its gonna be 3rd week, its lost as we were flying it, in big open space where houses are there, but not risky, as we are very far from them, but we lost it and never found it.

I would recommend you ASP .46 engine its best. Or you can go for 40 size combo of Hangar 9 which comes with Evolution engine I think .46 NT and JR Quattro 4 channel radio. Naturally you need for channels initially, 1 for throttle, 1 for rudder, 1 for aileron and 1 for Elevator. Evolution and ASP both engines are Chinese, and ASP is a true copy of O.S.. ASP screams, its great engine.; I have also bought HB german engine of .61 size and my friend is getting me 60 size plane which is easy sport's like plane of great planes. It's my just brief experience, and In this RC Universe I observed that people praised about all engines whichever they had been using and they never found any problem, and if anyone faces the problems, they naturally say its not good. GMS are good engines, my friend is using .68 Two stroke, and that engine can run and screams like hell. TT, ST, all those engines are great, but when we buy the engine, we look into our pockets as well, so, ASP, Thunder Tiger, Super Tigre, Evolution, GMS, these are good engines and can give you great flying when they are taken good care of.

Once again capt17 Welcome to the hobby, I hope many would post here regarding your question.

Have safe flying

Mody