I purchased a Yamaha EF3000is that is extremely quiet (53-60db) and it will run in econo-mode for 19 hours at 1/4 load. I previously had a cheaper Chinese Magna 3000 that did okay but constantly leaked oil. It's nice to finally have a nice trouble-free quiet generator.
When I first got it, I filled it with oil (it's shipped dry) and added gas. I was sitting in a chair next to it and pulled out the choke and gave the starter a gentle pull and it fired right up! My wife can start it with no problem, almost always on the first pull. It's got enough output to handle a 13,500 btu air conditioner with room to spare.
Note: This unit requires an adapter to convert the 30 amp twist-lock receptacle to a standard 30A RV receptacle.
http://www.yamahagenerators.com/EF3000iS-p/ef3000is.htm?gclid=CLuMmIWEzsECFQyMaQodt3gAIQ