I use SMC and MA's. A guy was showing off his cheap lipo's to the owner of my lhs. They blew and he lost everything. That's why my lhs doesn't carry the stuff. He will order it but he always warns people about quality. He has some budget batteries but the stuff you see for $12-$20 bucks, that junk isn't going in something I spent over $1000 to get it where I want it. The samething happened with one of the made in China monster truck (1/8 scale) brushless setups. The price for the brushless system was $100 and it cooked a Revo. lol Sure the more expensive stuff can go wrong as well but not nearly as often.