I have six Interstate GC-2 6V batteries from Costco. When I bought them 3 years ago they were $84.95 each. We almost always dry camp the batteries have served us very good. We watch Satellite TV in the evening for a few hours make coffee in the morning and watch news for a couple of hours in the morning plus lights. Batteries are still at 12.4V or higher when we finish things in the morning. Are there better batteries, yes but not for the cost from Costco. Before buying them I was not a fan of Interstate batteries but these have been good to me.
1999 35 ft. Dolphin 5350, F53, Banks System, 5 Stars Tune, Air Lift Air Bags, Koni Shocks, Blue OX TruCenter, TigerTrak track bars F&R, Roadmaster 1-3/4" rear auxiliary sway bar, 2004 F450 Lariat Pickup 6.0 Diesel Crew Cab DRW, 4X4, GVWR 15,000, Front GAWR 6,000, Rear GAWR 11,000, GCWR 26,000, 1994 36ft Avion 5er, GVWR 13,700, 2,740 Pin Weight.