My wife's car is an '02 Impreza Outback Sport. On paper it sounded like a good choice for her. It's good on gas, awd, and enough room for two car seats in the back, and what appeared to be a decently roomy hatch area.
Well, all of that mostly held true after purchasing it. It is good on gas, and the AWD is great for the winters here. The two car seats fit in the back, but you're not safely fitting a small child in the middle of them. Also, the legroom is a bit lacking in the back.. so with a rear facing car seat you're forcing the front seats to be pushed up further than might work for you. When I'm in the passenger seat my knees are touching the dash. The rear hatch holds a double stroller, but doesn't leave much room for groceries. You can fit groceries in the back still, but typically are stuffing them where you can and putting them on top of the stroller. Why not put them in the back floor boards? Well.. that's occupied by diaper bag... purse ... extra blanket..or winter jacket if you're not wearing it in the car.
There are three other gripes I have about that car, but one of them could just plague the hatch models. The first being the smell of fuel being pulled through the ventilation system when temps drop below about 30F. This seems to be a pretty wide spread issue with Subi's. There's a recall for some models, but ours was not a part of the recall. Not something you want to have happening, especially with small children in the car. My second gripe is that the car developed a slight head gasket leak around ~145k on the clock. Due to it having a boxer engine this will not be a cheap fix, and makes me almost want to just trade the car instead of having it fixed. The last, possibly only plaguing the hatch model, is the rear windows fog up pretty bad in the winter, and the HVAC system can never get rid of it. I've tried applying an anti-fog compound last season, but it didn't seem to help much at all.
It's turning out not to be as practical as I thought. YMMV. With that said.. she likes her car a lot other than the foggy window, and fuel smell. I feel cramped in it, and the head gasket makes me weary of how long this thing will last.. or how much $$$ it will cost to make it last. With that said, I WOULD purchase a WRX as a fun replacement that would be decent in the winters, but I would not purchase a WRX as a more economical/family vehicle.
Sorry for the slightly long post there...
(edited now that I was on my laptop instead of phone)