[raverbashing]

Yes, but you're throwing it into an inverter, and it's not like you're carrying it too far. High voltages also present problems in itself (isolation, etc)

Now, on a second thought, maybe it's more efficient to do 400VDC to 120VAC/240VAC (don't know the exact values)

[kragen]

DC-DC buck converters may be a little simpler and more efficient than boost converters, I don't really know.