I've had my WRX 5 dr for 2 years now; 22k miles @ 24.5 avg mileage. I wrote a review on 11/23/07 and what I wrote then still holds. On top of that, I believe that the Subaru AWD system is superior to my Audi's, even w the performance tires on it. I've been the only one to make it up our hill several times over the past two winters (on ice), passing sport utes of all types splayed across lawns and shoulders. I've also had no problem following large Mercs at high speed on interstates - slowing only when my senses returned and the realization that a large fine would be very painful to me. It's a great car.
AWD, interior space, and... the motor.
lag between accelerator and clutch, and a bit more sound dampening (but, hey, I'm an old guy...)