What are the downsides (purchase price is not a factor) of using 128 GB CF cards in travel photography vs. smaller ones or not filling up the 128 GB to capacity? (Applicable situations: remote, minimal-gear backpacking, no electricity, not much time for late-night backups, etc. in remote parts of the world.) Shooting couple thousands of images without the need of changing cards or download to an external hard drive is a definite plus. The downside is that you have 4,000 precious images from the last two weeks on one single card that is also in use in the camera. (In the old days, we had 120 rolls of Velvia in a Pelican...) Any thoughts, brainstorming, experience on this subject?