What tires are you using?

I'm looking to get some tires that are fairly thorn proof. Right now I have a Smoke on the back and a Dart on the front with tubes.

I'm an old school trail/cc rider. My ride is a Giant Anthem. Even if I stay on tame trails, Jacobsburg for example, I still get thorn flats alot. I have tried all kinds of materials to line the tires to no avail. I'm ready to do something more bomb proof.

What are people using around here (Lehigh Valley)?