bdebde, I've had no problems yet and the 2.5d seems to be liking the 6S. From what I understand, 6S is pretty much standard with the 1515/2.5d among the helicopter guys.

gixxer, from what I've seen, MGM has been good about warranty repairs and they really try to be helpful. It just takes a long time to get stuff back. The reports that I've heard say about a month. It took me three months to get my last controller back. By the time I got it back, I had almost forgotten that I owned it and had already bought a replacement, because I got tired of waiting.