The sPOD is the way to go. It is just 2 wires to your battery (+/-). Then get the Low Voltage protector that sPOD offers. If your batery gets low (11v) it kills all the accesories on those switches. I know this system is not cheap, but unless you plan on running a fridge for days without starting your car and you need that extra battery storage, I think this is more economical and safer in the wiring realm (not knocking your wiring skills) to get a low voltage cut-off. I have run lots of accessories (laptop, winch, 6 lights) in rigs in the past and never had a dual battery, just a low voltage cutoff.
Compare an sPOD w/LVCO system to a complete dual battery w/tray and I think you will see a very close similarity. Both would be nice, but getting your wiring right with an spod will save a lot of hassle in the future as you add accessories!
RUBI / 37" Grappler's / 3.5 RK X / 5.38's
RockKrawler : PoisonSpyder : RCV :LOD : Iggee : sPOD : Nitto : WARN : Yukon : Rock Hard : Tatton : PolyPerformance