Just another 2 cents...saw one of these fly for the first time day before yesterday, windless conditions, and it shot around the sky like a dream. Am getting one this week.
As you mention having to be very gentle on the controls, the question of control throws comes to mind. The one I say had the throws set to less than 1/2 inch and was very manuverable--loops, rolls, the works.
Anyhow, just a thought.

digger