blue top optima $180 55 amp hrs
2, 6 volts $75-150 each, 200 - 250 amp hrs. Takes 4 optimas to equal two 6 volts.
I have lifeline AGM's now 105 amp hrs per, but at almost $275 each and I need 3 to get 315 amp hrs at about $900. I can do 4 US 145xc's for about $650 and have 500 amp hrs. It is starting to be a no braniner. I would definatly love to just 3 kinetics but at about $1500 for that setup, I don't think so. Except for the hassle of maintaining the 6 volters with distilled water I think that is the way I'm going in this day of the thin wallet.