Well we got the 328d wagon around Christmas and, for the most part, I really love it. It's solid, looks good, has great and smooth acceleration (even considering it's the "weakest" engine in the 3 series), handles really well, is comfortable, and has well thought out cargo space. My only complaint is that the rear and rear-side visibility sucks, especially compared to the Saab 9-5 wagon, which is terrific. It's also a steep learning curve going to a fully high tech car from a 2002 car. In many ways the ergonomics and controls are much simpler and safer in older was, at least for me. My 3-person family went on a long weekend drive to the Adirondacks with downhill, XC, and snowshoe gear, and fit pretty well. It would have been a challenge with 4 people. The rear center pass-through is a big help to using the space efficiently for ski trips.
Notwithstanding orders from the Mayor and Governor to stay off the roads or risk arrest, I couldn't pass up the chance to try it out in the recent Blizzard. Even without snow tires, it was fantastic. (It came with 17" Pirelli Cinturato P7s.) Much more solid than the front wheel drive Saab with X-ices. I could go anywhere, in pretty deep fresh snow, unplowed streets, drifts, plowed snow, etc. My neighborhood is really hilly and I had no problem getting up steep hills that I know the Saab could not have managed. I can only imagine what a beast it will be with proper snow tires. (Storing them will be a problem.) I only got stuck briefly once, and that was getting out of a parking lot in deep, dense snow that was wedged up against the undercarriage, which I had to dig out a bit. The car's only weakness in the snow compared to the Outback is the road clearance, as far as I can see. The AWD x-drive system is amazing.