orrrrr....
http://shopping.kinugawaturbo.com/subarumy082008.aspx
I'm running their TD06SL2/18g and love it. Pure highway power though, hardly much in the city without immediately going over speed limits. Their TD05H/16g would be nice for you and budget friendly. Just expect about 2 weeks shipping time if I remember correctly.
These turbos, IMO, are one of the most underrated on this site. Kinugawa is a little brother of KAMAK who is a very high-end turbo maker in the Nissan (and one other brand??) crowd specifically.