I bougth two sets last year and so far they are only ok. The weight and power were good but they started to puff after a dozen flights or so. The still fly well but I don't think I would buy them again. Will see when they come out of hybernation in the next few weeks.

My favorites so far have been the Sky Lipo 40c from Hobby Partz. Better power and better price just tough to find in stock! Some have had luck with the Zippy compact which I may try next.