I don't know if width should be all what you're looking for. A cheap crappy tire on 225s won't outperform a good sticky tire on 205s. Are you looking for a summer tire? all-weather-tire? for racing?
http://grassrootsmotorsports.com/for...re/8825/page1/
Glad you brought it up, I'm looking for good street tires that will perform without needing to be replaced too often.