The STi is a strong car. In m yopinion, the 06 is pretty ugly. I think the 04/05 are much nicer looking. They are highway monsters, but don't expect to get Scion fuel economy. I get 12/13mpg, but I drive like I run the AKA Rally
Overall, the STi is an amazing car, and I highly recommend it. Total driving pleasure, and they're wonderful to modify.