There are several new under 500cc bikes I would love to own--but they don't make it over to the US.
Light weight, good MPGs, and for me at least cheaper to insure--just my cuppa tea.
The Ninja 400R (sort of the replacement for the Ninja 500) is available in Canada, but not stateside. Seems anything under 650 is a VERY tough sell here.
Too bad for us, really. I have 2 pre-2008 ex250s (Ninja 250) and love their wee hearts. Tough as nails and rev like mad--peg feelers don't last very long, nor do Pirelli MT75 rear tires. My GF and I ride two up, and despite what the know-nothings say, the 250 pulls the over 300 pounds fine. Revs for hours at 9K RPMs on the highway without a complaint.
For longer rides 2 up, the 400R would seem perfect (combined we are near the 250's weight limit, so can't really haul gear--limited to day trips).
I'd pay a premium for a Europe/Asia only under 500cc bike.
Geoff