Having searched through RCU, I'd like to get some opinions - if you're so inclined to share . . .

Having a very good experience building my H9 Alpha, I've determined that my second plane (for a variety of reasons) will be a H9 Ultrastick 40.

Are there a good engine people would like to recommend for the Ultrastick? I'd like to keep it 2-stroke for now, for cost efficiency.