I'd sort of echo the others on here....I read these boards, agonized a lot, and bought a Honda EU2000i. I've been totally happy with it! It runs everything except the a/c just fine. Even my wife's 1850 watt hair dryer. I plan to get a second one, and make a mount up on the tongue so that when I get to where I'm going, I can set one of them on each side and have them paralleled together and chained down to prevent them walking off. They're good units.
The one pull thing is a bit of a misnomer....they are one pull to start if you've run it recently. If it's sat for six months, it takes about six pulls
They are good medicine.
The Yamaha is probably just as good. I went with the Honda, in the end, because my local dealer (who is also an authorized service center) sold red, and made me a deal better than I could get online. Other than that, if blue is a better deal, I think you'd be fine with it.
Like they said, get 3000 watts if you want to run the a/c. Otherwise, 2000 is fine.
And a side note: I was up at WVU last weekend for homecoming. I had my little Honda purring along quietly and I cut it off at 10:00pm to be courteous. But the goobs on either side of me with their contractor gennies cranked 3600rpm all night long, 6000 watts each, all night long, and 70 db, all night long. I guess if you're used to a Huey hovering beside your bed all night, it's not hard to sleep. I'm not, so it was. Oh well, at least I was courteous.
But in all seriousness, these little Honda's are so quiet you probably could run them all night and never bother a soul.