I've bought about 12 packs off ebay, 2s and 3s and well as 6 "american" made packs. all 6 of the u.s packs died very quickly and only one, yes one of the hong kong packs i have had has had a problem. I've ran three hong kong 3s lipos hard on my scalers, through snow, mud and even submerged them without even covering them up and they are still working like brand new with well over 50 charges on each one. Every MaxAmps pack I've had didnt even last a month! and they are expensive packs....you do get what you pay for on alot of things but lipo in my experience is not always one of them. I'm not sure that Dom will back me on this one but i bet Chip will, i know that he has spent an ass load on "the good" packs like i have and they have failed him as well and i know he too has had good luck with the cheaper packs.
and another thing is, alot of the other brand just buy the hong kong packs and relable them as their own then jack the price up a bit. you want some, i sell you some SNG 11.1 lipo's lol...