So mostly everyone is saying the wagon and why is that? The sedan does not have room? I would prefer the sedan but you guys must know something I do not. I also may be better off getting a RS version and not the WRX because with the WRX I will have to use premium fuel and that could hurt the pockets…

 

Upside to a wagon:
more cargo space
looks rad

Downside to a wagon:
none (unless you think not having fender flares and being slightly more tail happy are downsides)

... and Premium gas... who cares. Do some quick math on how much more money you'll spend on Premium compared to Regular 87 oct.

The difference is usually about $0.20 per gallon on Premium vs Regular. Say you drive 12K mile per year and you avg. 22 miles per gallon. That's about 545 gallons per year. So Regular gas would save you approximately $109 per year. If you can't clear that much more money you should try finding a much cheaper vehicle.
I hate math so feel free to check my numbers

 

By the WRX. You'll have fun with the turbo and see better gains for the $$$.

Oh and Wagons are just hot.
If I didn't get my 05 sedan, an 03 black wagon would have been my first pick.

+2 for going to the dealer for a test drive.