If you are looking for something light but with more focus on being bulletproof try Michelin Krylion Carbons. Nothing but stellar reviews across the board on roadbikereview.com and I can personally attest to their badassness.

They are not a racing tire, but they are not heavy and do not roll like **** like armadillos and gators do. They are 245 grams on the 23's and the only way you will get a flat is rolling straight over an upturned nail.