I have an older Honda 3000C, it ran my a/c and a few things on the RV, some of it not all at once. My thinking because it was a bit nosey was maybe a new Honda 300IS would be less nosey (it was) and maybe put out more juice.
Wrong, I was only able to run it about fifteen minutes as it kept going into overload and shut down. Took it to a dealer he said it was running fine, yet it was not doing what my old one was. So, I traded it in on a new Honda 5000IS. Finally got to use it on the way home one night. Plugged it in and it ran twelve hours and ran the a/c, TV, sat. dish and everything else that I had turned on. Love it, yes it's heavier and sits in the back of my truck between the fifth wheel hitch and a tool box chained down. Now have a winch set up to load/unload it. Everything works great.