My insurance guy noted that for the most part, British bikes are cheaper to insure than Japanese bikes. I noted this when I was shopping back in December/January - a 675R (while it was a more expensive bike) was actually cheaper to insure with full coverage than an R6. The Street Triple is a beautiful looking bike, though I can't comment on the ride/handling. I will say the 675R I took on a test ride felt absolutely sublime! Had nice midrange power, a very unique sound, great looks, and awesome handling.
Have you considered any Italian options...?