Performance difference between S4 B5 and B6

[xjussix]

If I'm not mistaken the B5 S4 is the V6 biturbo model and the B6 is the new V8, right? B5 produces around 250 hp and the B6 340 hp, correct?

Now, the question. Has anybody experiences in both? I was interested how much better(?) the B6 performs. Not that I can ever afford one but anyways.. :D

Thanks. =)