Audi A6 - Gotta love 3.0L Turbo and AWD.
You should be able to get a very nice specced brand new one for under $100g
Otherwise Jaguar XF, but yeah that more expensive. Id suggest a Lexus IS250, ive driven the top line one and its a very nice car; but well its not actually a Euro and its not lightning quick, but is much better than your mid spec 3 series, A4's and C class'