I run MAXAMPS and they are top of the line. I have a 3 year 300 cycle warranty. It is a 3S, 5250MHA 45c/65c that last about 45 mins in the track. It gets warm but never hot and its a good match with the MMM and Blur. Most people talk down on it because of the price but if you look at all the top of the line batteries they all are about $100-$150.
Check out the additional information
http://www.maxamps.com/warranty.php.
You pay for what you get. Cheap Batteries=poor performance and possibly fry motor and/or ESC. Between HPI and Traxxas they do the testing with SMC and MaxAmps batteries.