One place you should definitely read up is eopinions.com. They have a reward system for writing better reviews, and you will find that they are unbiased, as opposed to what you might find on a Subaru forum.
My only Subaru experience was with my dad's Impreza wagon, which was a 1997. He was perpetually having problems with the brake system and wheel bearings. I assume they have that ironed out by now.
The idea of a sporty AWD car is really nice. They're very practical, but not as roomy as you'd think by the exterior dimensions. (the drive system translates to less legroom than you'd find on a Honda or Toyota with front wheel drive)
They are very sure-footed in the snow, and handle EXTREMELY well when it is dry.
Fuel mileage is not that great though, I don't think Dad ever saw better than 25 mpg, and his was the smaller 2.3L normally aspirated model. Probably another price of AWD.