Hey, I'm all about overkill, and where I commute/train is rough on tires....

Flats since August (working from memory), on Mountain bike an touring bike.

Continental Gator Hardshells 700x32 .... 0
Continental Gator Hardshells 27" x 1 1/4" .... 0
Continental Gatorskins 700x32 .... 3
Continental Town and Country w/ kevlar tire strips 26"x 2.0"..... 2
Panracer Paselas 27" x 1 1/4" .... torn sidewall
Schwalbe Marathon Surpreme Tour (???I forget, their uber-premium "world tire") 26" x 2.1" .... 2
Serfas Drifters w/kevlar tire strips 26" x 2.0 ..... 3

Jut 11 flats since August? Seems like more in memory, spent more'n a little finding my way to Gator Hardhells too (they rock)