are you just wanting the acceleration? or are you concerned with the brand?
I'm saying because while I love my 335i, my EVO VIII was better at every performance mark (acceleration, cornering, everything except gas mileage). My Evo was pretty heavily modified I'll grant you, but it was still cheaper than the Audi or the BMW.
It wasn't nearly as nice, and yes, there was no warranty, but anything that runs 12.4 on the drag and can seat 4 adults isn't bad.