Personally, I'd have zero reservations about picking up the scoobie other than the fact that I'm a Mitsu fan and patiently await the Evo. And also that scooby parts are expensive!! But from a performance-minded perspective... WRX hands down!
I agree that the WRX wagon is really quite functional, especially if don't have really big people in your circle of family & friends. The Altima is a sweet car, and it is absolutely cavernous compared to the WRX. Obviously the WRX is more fun to drive being a turbo with 4wd. So you're not rallying to work, but you can still autoX it! Especially considering the fact that Subaru gives you a free SCCA 1yr membership to do so... not something I'd do with an Altima because is so friggin heavy.
A lot of car mags agreed that the interior in the scooby was kinda cheesy but they said that's not the point. It's all about the driving experience with the car. The Altima is probably the better SEDAN sedan... the WRX wagon would be my pick if I needed that extra haul capability that the Altima doesn't have. But the Altima is a much more aesthetically pleasing car...
Test drive both is good advice... 4wd rocks! Drifting & oversteer is easy and controllable, driving on the edge is simple, and as long as you lay off the boost you can get nice city economy... though I seriously doubt you'd be able to resist all the time. I wouldn't take the stock scoobie to the drag strip since you'd be likely to damage the tranny doing insane launches.
<< if your not a racer, then you really shouldn't consider the WRX >>
- what about snow? AWD and snow, no problems... FWD and snow... ugh...
The WRX is just an insanely fun car to drive... if you know how to drive it! The scoobie is a 4dr... granted if you don't deal with snow, it's still awesome in the wet.
For those Honda lovers, even with a LSD and a bit more HP, the RSX TypeR would have a very VERY though time beating US-spec WRX. AWD & the turbo powerband is just too much of an advantage. The WRX is quicker every aspect. If it was an STi... forget it... be prepared to eat mucho dust on the H emblem. Not to mention that RSX sucks sour frog @$$ as a tuner car currently. It's too new, doesn't have a factory turbo, and doesn't have the mountain of aftermarket support that the WRX already has from overseas.
If you're the kind of driver that has never seen past 5K on their tach and can't drive stick... buy the Altima.