I use the Millennium bars, after being in my pack for Two years they still are tight. you can find them at
www.beprepared.com I must admit that they usally don't last that long before I eat them.
I like these also, there are about 6 varieties. They are similar in consistency to things like the Mainstay rations and other lifeboat style rations I've tried, but, they are individually wrapped. They are shipped in some of the MRE's I've bought from Long Life Foods at times, but, I've been buying them separately now for a while.
I keep them in our car kits, and usually have a few in any daypack/backpack I'm hiking with. Problem is, as you noted, they actually taste ok, so my son and his buddies eat them like snacks sometimes... I went to rotate the ones in my truck a couple weeks ago, and found out that they were all consumed following a lacrosse game at some point. It was my fault, I was informed, because I hadn't brought pizza to the field for after the game
I guess I'm trained to know it's my fault anyway after 20+ years of marriage...