going with something more spl based i would want more capacity. if your electrical is strong already and you just need something to fill in lets say a regulator gap a battcap is fine. play something that has alot of bass and causes alot of dimming in the long run a battery with a bigger capacity is best. thats why i like the kinetiks. people say xxxxx battery is better for a burp but if you do alot of different things day in and out with your stereo like parked listening , engine off listening, generally beating the snot out of your system then capacity is a big deal.