Anyone had any experience with Meals Ready to Eat (MRE's)? We are planning an extended canoe trip down the Missouri River and thought MRE's might be the way to go. I read an article about their preparation in the NYT on 2/19 and it got me interested in this. What does this stuff taste like? Sources? (there seem to be hundreds of spots on the web advertising but a recommendation on a reliable dealer would be appreciated).