I went in to the local battery supply store today to find out the cost of a bigger battery for under my hood. I explained my situation (mild light dimming, no big 3, average battery under the hood). What the guy told me surprised me. He advised me to skip the big 3 and skip putting a bigger battery under the hood. He said I should just add a small battery (some kind that doesnt spill) to my current set up. What do you guys think about this? He has a 1200wrms set up of his own and has helped people out with their 5000watt systems before by adding this type of battery. He seems very educated and seems to know what he is talking about. What do you all think of this? The batt is $85 and that's a much more appealing price than a bigger batt under the hood and/or the big 3.