2 32Gb CF and 4 16Gb SD.
Strangely I see a lot of people talking about the bug and glitches of the cards but most forget the obvious human "errors": lost or stolen bagages and so on. So CF in the camera at all time in my day pack/ carry on, SD in the cloth bag in the hotel/check in bag. My gear is insured, not my pics.
I have a belt pack that i carry my cards when going through airports, if the place i'm shooting has great wifi i upload them to my google drive account as a backup, if not then i then burn them to DVD's and send them via courier to the studio.
i've never lost an image yet (touch wood).