Three equally important reasons: light weight, excellent performance, versatility of 1 or 2 up racing.
Really heavy, decent performance, versatility of 1,2 or 10 racing, and can cary more beer than you'll ever need <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />
And when you're screaming into "B" mark people usually get out of the way because they know you're not as agile as the smaller cats!
Of course its a Stiletto 27!
Wanna beer!
Clayton