Are you using the Pros or the Pro slicks? I have had good luck with the Pro slicks at least in the 25s. I find they roll a bit better than Gatorskins and they are about 15 or 20 bucks less. 4000s roll well but they are also a bit on the expensive side. Gatorskins last a long time but tend the shed threads on the side wall well before they wear out. I haven't tried the others.
Take a look at this site just for kicks.
http://www.roadbikereview.com/cat/wh...489_00crx.aspx