I have both 2 each Champion 2000 watt inverter generators (the ones that can stack on top of each other at the 4 corners) 73536i - I think I paid $399 each. I bought them in 2012 or 2013, and have right around 2000 hours on each one. (close guess). Each has seen 8-10 hours a day for several weeks at a time and never failed. Oil consumption is "not bad" - I think I add oil about every 25-30 hours or so.
Surge capacity stinks in "eco" mode. They just do NOT throttle up fast at all, and the "overload" trips way, way, way too easily. I always thought they were pretty good for what they are.... but, "they ain't NO Honda!!!"
I hate having to leave them at "full speed" but sometimes I have no choice - because they just won't "come up out of ECO mode" very easily.
I have one Honda eu2000i... I had two, but one got stolen.
I also have 2 each Predator 2000 inverters. They are currently running 8-10 hours a day, 5-6 days a week. Oil consumption is nil. They start easily and parallel together easily. They also will parallel easily with any other inverter generator that I have tried (Champion, Sportsman, Black Max, Honda and other Predators).
These are as close to a Honda as you can get. Noise level is *almost* as good, fuel consumption is maybe a little better, and "surge capacity" is excellent. I think I paid $439 each with a coupon back in February. Each one already has over 1000 hours on them. Oil gets changed about every 2-3 weeks (depends on weather) and about 150 hours. They can be a little cold-blooded for the first ten minutes.
BUT - when warmed up and running, they "come up out of ECO mode" very easily when a big load hits - they will even run some pretty big A/C units (it might take a second or two of struggling before they get there, but they don't "overload" at the drop of a hat, either)
There are some other very good Chinese inverter generators (the white Pulsar ones come to mind) and Costco has a "Yamaha powered" generic one for about $489 (?) or so.
A lot of this is anecdotal, but take it for what it is worth.