We got 2 of these motors for our F3A pattern airplane. My son is a seasoned F3A pilot, so his feedback and experience is based on experience with Contra V3 combined with a Hacker C50 Comp.

CRS300 is lighter than V3, works well with the modern "idle low RPM". Pulls well 5kg F3A bipe-plane through P and F schedule. So far, he has around 100 flights on one of his motors, it doesn't show any signs of wear.

It's well priced in comparison with other of similar contra drives.

I wish the Dualsky site has better description and offers the different accessories you need for this motor. And I wish to be better available.