Just for the record... I am going to copy this from my site, over to this thread. An updated opinion, on my experience with the new "YAMAHA ef 2400is"
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Good question mon! So far, I have only been trying to break-it-in. Just from that, I like it a whole lot better than the Honda! (eu 2000i)
It does run longer between fill-ups, not certain exactly how long yet...) I love the fuel site gauge!!
When running the electric heater and the microwave at the same time, it is less noisy than the Honda, because it does not have to rev-up so danged high, to achieve it's maximum output. Matter-a-fact; the Honda would not even push the Microwave and heater at the same time. With the 'Yami, no problemo!! and like I said, it does not have to achieve so high an RPM therefore it seems to make "less noise". With the new "2400" I found you can keep the electric heater at about half (750 watts) and run the microwave both! that is a real plus, and exactly what I needed for winter use in the camper.
Over-all the size specs' are pretty comparable, it's just the Yami is so much wider! But I like the way it is built better! it is east to access anything under it's cover! The Honda was a bear to take apart and put back together - I think it's an "engineering marvel" how they designed the smaller Honda! Great generator! But the 'Yami is going to easier to service, when the "valve adjust" comes time! Also, I like the dedicated access for oil changes on the bottom of its cabinet!!
I'm going to be getting the Yami 1000 inverter, when I can. I will use it for mid-summer trips, and the larger "2400" for winter trips! I fela really needs more children like this :0) hehehehe
Greg*******************************************
That ain't "spell-checked" :embarrased