Gas mileage on a WRX would be about the same as an IS300's, I would think. A Scion TC is a good car, if you can afford all of the techno cd's and neon lighting. If you aren't up for a WRX, save a little money and get an older 2.5RS, those cars are sweet, I want one so bad.
Oh yeah, props on GIR in your profile pic.