| If you can part with the extra $2k, I would say the '06. A little sportier, updated nicely. Depends on if you like the more classic look or the slightly wavy newer styling. From what I've gathered from researching 3-series wagons each update brought more power, lighter components better efficiency, etc. This year may be the last year for 3-series wagons- the 5 is already done, replaced by the questionable GT.
Haven't run across anything negative about the AWD. I'm looking forward to putting it through the paces myself... | 
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