2008 M3 or Audi S5?
Im going to be 17, I don't care about which one is a little bit faster, but which one should I get? I know the M3 has its history of being great with its last generation, but I think it missed it this time...Which one will be cheaper and how much will it cost?
Sry, Im talking about the Brand new M3 08' model.

M3.

And you getting an M3 or S5 is Bull****.

I would definately get the Audi S5. The Audi S5 looks much better. It has AWD and if you are talking about the new 2008 BMW M3, then the Audi S5 is also much weaker, but just as fast with only a 0.1 difference in 0-60 time and the same top speed. The Audi S5 is also newer technology since it came out after the M3. The Audi S5 is cheaper to buy, but the maintemance costs are higher than the BMW's.