In the "For What It's Worth" column, I lost my elder 2008 EU2000i in February at the height of the then cold snap. It had about 2500 hours on it with less than stellar maintenance. Put the rod up through the piston, scraped the cylinder walls and all sorts of metallurgical nastiness ensued. And So It Goes.
A friend and his brother in West Texas both run the Yamaha 2400's. First one developed an oil leak from the casing at 1600 hours. The second one started leaking from the case at the same spot at 1840 hours. Both are experienced genny owners and real regular in their care for their machinery.
Now, my second EU2000i (2010) has about 1500
hours on it and it will NOT operate in parallel with a new companion unit for longer than 15 minutes without overheating and cutting out ... a real problem as SWMBO desires A/C in her bed chamber whenever it gets to be more than mid-70's out of doors. As noted by many before, that is unusual behavior in New England, but you have to make allowances as she was born and raised in Louisiana. (It's a mindset issue, I think...)
So, my experience of Honda EU2000i's is a useful life in the vicinity of 2000+ hours (rough average of the two). It isn't like they owe me anything. The new Companion is even quieter than my old ones. I just hope they've cured the starter rope wear issue. Given a combined cost of $2200 (bought at end of season and/or Louisiana Hurricane Preparedness Sales) the fixed cost has been about $0.25/KWH plus fuel & lube costs. Fuel costs have varied a great deal in the past nine years. At no time has it been less expensive to generate our own power than to buy grid power, except the fixed costs of bringing power to just this one site in Maine would exceed $10,000.00 for poles and installation.
As always, Your Mileage May Vary...