If you decide to go bigger, 17" or 18" the Prodrive P7 (17") and PFF7 (18") are awesome, and stand up to poor surfaces well. They come in a variety of colors as well. Here's one of our Euro brethren with a set of PFF7's on his YELLOW baby.
http://www.subaru-svx.net/photos/fil...cket/32831.jpg
Glenn
edit: OH! And did I mention that they're designed for the Subie with correct offset?