As much as I'd love to have any of the S or RS cars (save the S3), I don't consider any of the current "S" series an "Audi Beast".

For true beast status, in my books:

1. The legendary S1 (rally car) Not a production item.
2. Current (B7/B8) RS6 / RS4
3. Older, rare RS 6 Plus
4. Current R8
5. Older B5/B6 RS

No disrespect to you lucky "S" owners.

2006 A4 Avant 3.2 6MT Quartz. No mods.
Tech,Sunroof,Premium. No TPMS. No Nav. No Bose.
OEM XM self-installed