Going back to Flux. Fill me in on Lipo & chargers

Man, even though it only charges at 5 amps max, for $55 thats a screaming deal, even if I get two of them. I hear alot of people like this one also. http://www.hobbypartz.com/thac6smbachw.html

What's people experience been with reliability of the Lipos from hobbyking? I've heard its kinda hit and miss at times. How have the returns/exchanged/refund process gone, especially if you get something from a warehouse over seas?