While we're on the subject of light tires and flats...

What tubes offer the best compromise between light weight and flat resistance?
I'm asking because I've gotten lotsa flats with Specialized Turbo Ultralight tubes, in spite of Continental Grand Prix 3000 tires (on a 700c hybrid used for road riding).

BTW, most of these flats are of the snakebite variety, even though I keep the tires at 100-120 psi and don't go jumping curbs or otherwise subject them to impact forces.