Just picked up one of these generators for dry camping on my buddies' farm & in case of an outage at the house:
http://www.electricgeneratorsdirect.com/catalog/product..._174&products_id=565
Not too bad on "sound" - actually quieter than my power mower. Used it to top off my batteries on a recent hunting outing. Ran everything in the trailer with no problem (no air of course). Gotta say I'm pretty satisfied so far.
Don't plan on taking it to a CG, just out in the boonies.
I should mention also, that I picked it up at Wally World for about $150 cheaper than online.