JiggyNS, are you looking for a slick "with some meat on it", or for something more slimming?
Lanman, Good suggestion on the K-rads.
I added tire liners to my Conti/Hemispere set up on my goof-off mtb commuter. They are starting to show their age/mileage. Since this is my "no hurry to get there" bike, I like for bigger tires. I have been looking at the Specialized Rythm (2.3) and Compound(2.2) tires. "IF" the reviews are true, they are smaller than advertised.