the pressrelese says its a competitior to M5 and E63.
the size is the same as 5-series,E-class but the price is like a M3 and C63.

Audi of course.

I'd like to see some tests before I make my decision.

Audi for me, the A6 avant is the best looking wagon out there and now with 580Hp how could you go wrong. I am not a fan of GM products but the CTS-V should be nothing short of amazing. Wagons and SUV's are my type of cars though im a sailor and need lots of room to haul stuff from one event to the other making the RS6 more practical.

VERY easy: RS6

I need no tests. The result is clear.

So you are saying the CTS-V is a better car?

Like it has been said before I think it looks overdone much to the same as the IS-F and C63.

To much overdone on the bodywork.

RS 6 of course!!!

However, doesn't it have a 5.0 L V10??

I like the CTS-V more and its great engine is clearly detuned in this version, you can extract much more (reliable) HP from that Corvette engine

For me that was the easiest poll of the year... I don't think I need to mention which one I pick.

However, the torque the Caddie produces cannot be ignored. Also the fact that the price of the RS6 will be stratospheric makes it a closer fight. In the end, Audi's interior and the fact that it's a wagon wins it for me. Plus I'm not much of a Caddie guy (styling wise)

Rightly said, that's why, I skipped this pole ...!