I have been flying a Satio 300 Twin with the single carb for about 2 years, and this engine is the best kept secret in R/C. It is powerful and reliable. I use the McDaniel on board glow, and I have not had a dead stick in over a year (except when I ran out of fuel). For real performance, use 25% to 30% nitro. I have it on a 13.5 pound generic model, similar to a Roadrunner, and it has unlimited vertical. As far as ease of handling, except for adding after run oil after flying, it ranks with any two stroke engine. I have not had to touch the needle valve in months.