Realistically, the mini-CDs are still you best choice. Flash drives are great for EDC, but realistically, they have to take a back seat to a CD full of TXT files for portability. Much better for recovery information

The PDA is usable, until it fails, but they do fail. Never seen one that could take a bath. When something goes wrong, I figure I'm going to be wet, cold and bruised, none of which electronics like.