What color bike? cause if your thinking about the yellow gixxer with the blue bull shit on it, go honda. but any other color go suzuki, my 04gixxer 6er with pwr com, full yosh, and a bmc filter puts a grin on my face every time i unwind it, and its the best for monowheel mayhem. i rode a modded 03 600rr it just felt too refined,but a lousy bike to have if you want to scare the shit out of yourself.
Take a look at an r6 i like them. my buddy has an 02 with full hindel, k&n, jetkit, and a bigger sproket but that bike just dives into corners tho.

my 300lb ass on my gixxer6 vs. his 190lb ass on his r6 are right next each other through four gears.