bike!! But if its your first bike, and you buy any of the ones listed, you'll probably be R.I.P. in no time. Get a nice starter bike, and learn to ride first. GSXR's, busa's, R1's, yzf's are all designed for EXPERIENCED riders. Get a used starter bike, and trade up next year! My .02 BTW, I have a naked streetfighter, Honda 599--very fast, but not as fast as the ones just listed and it will still do 0-60 in 3.2 and run the quarter in 11 secs.