The SanDisk Extreme III is a very easy card to find. Most all stores with an electronics department and memory cards for sale will have a few sitting on the shelf. It’s a very popular card for good reason. The Extreme III will work in good, bad, and ugly weather conditions. If your camera will work, your card will always work. I've taken shots in the rain, in the cold, and in hot weather and my card never failed to save a shot. I don’t suggest it but I've dropped my card in mud puddles, I've stepped on it once or twice, I would almost believe you could set this card on fire and it would still work.