I don't really listen to much of the complaints… I read them, but by and large most end up being user error….
The only complaints I've ever heard about OS are the high prices, which really aren't that high, and a couple of the early 2000's budget engines had some liner issues. I've been running O.S. engines since the 80's when I was a little kid and just learning to fly. Never had an issue. My O.S. four strokes from the early 90's are still running and still are the original parts… never had anything replaced. Some people have had issues with the GT33 starting backwards… but whatever… just kill the engine and try again. Using a starter like a dynatron solves that issue quick.
No towing plans with my SD, I am hoping to get to a few IMAC competitions and enter it in Basic . I don't really care about being competitive, just want to improve on my precision flying skills and have some fun.