get a sport version of one of these
535i, good cars and quicker than a 325i i think, well i had a blast with a 325i round my way and i was sitting on his bumper all the time lol
215bhp as standard and the sport does look a bit better with side skirts and front bumper spoiler etc, they aldo come with the lsd.
They go for as cheap as 1.5k up to around 2.5k.