I ride a Cannondale Quick4 hybrid with 26 inch wheels. Currently it is wearing 1.7 knobby tires, which were great for the trails and loose gravel roads back home in Minnesota. They also make for a cushy ride because I can keep the tire pressure nice and low at 40 pounds.

Since December I've been riding in Texas, in the Rio Grande Valley. I also ride a Madone. I find that due to thorns and flats that I have been riding my Quick a lot more than the Madone.

I want to put different tires on the Quick. The knobbies are not necessary for here and they really do slow me down. I don't want pure slicks because I don't want the flats. I am riding some paved trails and a lot of chip seal roads. I can't remember what originally was on the bike. Ideas for a good tire that rolls pretty well but has some resistance to thorns? I have had one flat on the Quick since I got here and 5 flats on the Madone, with many more miles on the Quick. All due to thorns. I ride about a 100 miles a week.

I don't want to throw money away but cost is not a major concern.

How about those kevlar liners? Are they helpful?