Originally Posted by Combi_Chris
optima yellow top mate , pukka batteries , can recharche 5 times quicker and are capable of a complete discharge x 40 before its dead
I'm guessing they are around £150 - £200 odd quid by the looks of things, although they do sound good.
TBH, I dont have any sounds, just a head unit and standard speakers. So think it will be overkill.