Who's running what and how do you like it? Costco has a champion 7500 for $750 but the reviews I read say its horribly loud for a campground. Now I'm.stuck.between 2 2000 Honda's paralleled or a single 3500. What say you?
Dual 6V batteries, that's what we do, LOL. Lasts us 5-7 nights, depending on how much we use the heat.
If you need that much power, and want to run it for extended periods on a campground, go with the Hondas.
2012 XLT, EB, 157" WB, screw, 4x4, HD payload, max tow
What are you wanting to do. Run lights and a computer, the dual 6volts will do the trick. If you are wanting to run an AC, the Yamaha 2400 listed above will start most 13KBTU RV AC units IF you have a start capacitor installed. If you want to be sure or you have a 15KBTU AC, get a 3500~ish (Honda or Yamaha make the quiet ones with the inverter/conditioned power) or the dual 2000s. The beauty of the dual Hondas is that when you do not need to run the AC, you can run one of them to run most everything else in the RV and/or charge the batteries. Plus the 2000s are light, whereas most of the 3500s are HEAVY.