I'm a fan of clif bars for daypacks as well. They don't turn gooey when it gets hot, and the taste is OK but I never crave them, so I don't dip into them unless I need to.

I really wish someone would pack freeze dried rations like the military LRP rations -- vacuum packed and designed to take up little room in your pack. Being light is only part of the equation, being compact for me is a big one too. Mountain House has Pro-Paks which are vacuum packed but they still manage to find a way to make them bulky as hell. Which is kinda weird since they come from the same place.

Additionally, if they could get the cost of freeze dried food entree on par with the cost of an MRE entree (~2.50-4.00) I'd probably invest more heavily in them.