2007 Audi A4 2.0T Avant quattro 4dr Wagon AWD (2.0L 4cyl Turbo 6A)
Performance is better than expected, quality and finish are outstanding. Multimedia/NAV is the best, only I would add touch-controls. I tried BMW 325xi. A4 is smaller, firmer, more fun to drive (and feels faster). Recommend A4 over the A3 (especially when you buy it with quattro) or A6 (boring...), since I had both for a while before.
Quattro (in corners it feels like a rear wheel drive-power definitely comes from the rear), design and quality.