2004 BMW 3 Series 325i Rwd 4dr Sedan (2.5L 6cyl 5M)
Got it with 63k (74k now) and it's been excellent. The handling, quality, drivability is impressive. There really is a difference from other cars. Very solid feeling. Very roomy as I'm 6'-2", excellent legroom, good headroom. Not the most powerful but has it's moments (generally adequate unless you race). 24-25 mpg highway in the 80s.
Firm seats (good for back), best steering & brakes I've experienced. Reliable so far. Good stereo, reasonably quiet, good solidity, effective A/C. Firm ride but not rattle for teeth rough.
more power, some interior trim pieces are cheap, windows click (will need regulators soon), sunroof screen is flimsy. I don't drive it in slippery conditions so I can't comment on snow driving. HID lighting would be nice (mine doesn't have it). More expensive to maintain than a typical car.