Originally posted by LensBeginner I'd bring more than one, of a smaller size, and swap every once in a while.
1. having all of your pictures on a single SD is not a sound strategy in case something goes south...
2. there's a sweet spot in prices: prices per GB are high in low capacity cards (e.g. a 4GB card is usually more expensive, per GB, than a 16GB card), but this should not be valid when you reach the limits of current technology, so extreme sizes are more expensive per GB.
I agree with this - entirely for the first reason. If your SD card fails, or your camera is stolen or lost, you will sorely regret having everything on the one card.