My experience with YS is from flying planks. IMO they were definitely more touchy and harder to set up than OS. Perhaps their heli engines are different or perhaps they have improved this since I last dealt with them. They were also more expensive than OS (I'm assuming they still are).

In any event, they have three needles rather than two, so that adds a complication to the process if nothing else (one more opportunity to get it wrong). On most OS engines, I never even have to touch the low speed needle, so basically adjusting boils down to the main needle. Couldn't be easier.

Anyway, I'll take your word for it, and I'm glad your experence has been so good.

P.S. I'm not knocking YS...I think they are very high quality engines. I'm also not contending that they are "hard" to set up, just "harder" than OS. For these reasons, and also due to the price of YS engines, I just wouldn't recommend them to a total beginner.