If you're looking for a tough 25 mm width tire I'd go for the Panaracer Pasela Tourguard (TG) - on sale at nashbar (www.nashbar.com) for 20 bucks each.

http://www.nashbar.com/profile.cfm?c...eid=&pagename=

(if this link doesn't work, just type Pasela in the search box)

They tend to run narrower than advertised, so the 700 x 28's are closer to 25 mm wide