I'm not an expert on Honda Generators, but I've owned the EU6500iS for about 6 years. I purchased it to run my enclosed trailer at the track. I've used it a couple times at my house while the electric was out.
This is a very nice and super quiet generator. If you use it for the track, you'll really appreciate just how quiet it is. It will be running and you'll never know it. You'll actually hear all the other cheaper, louder generators, screaming and work their butts off around you. Your Honda will be running and you'll never know it. I've had a bunch of people who stop by the pits comment on how quiet it is.
I've had no issues with the generator. Definitely one of the best purchases I've made for my racing program.
- John