2 cards, swap them, use old digital camera for a quick review. Because nothing sucks worse than getting home a realizing somethings wrong with the camera, or a limb keeps triggering it, or whatever. At home i use laptop.

I also pair my cards up, the same 2 always goes in the same came. I mark them A1,A2-B1,B2,etc


"A moment of realization is worth a thousand prayers"