For fun and reliability, look at a 328 or 330. Both are 3 litres. There is also a 325 (and a 323 in Canada), and a 335 with twin turbos. RWD is fine in the snow, if you have winter tires. Tires are more important than number of drive wheels. If you plan to drive all year on all season (no-season) tires, you may want to consider the x model, but handling isn't quite as good, and mileage is down slightly.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue