Real MREs are pretty good in general. Consider that military personnel on deployment to remote areas eat them for 3 months straight or longer. I haven't had consumer-grade, but if I did, I'd prefer to by from the company that supplies them to the DOD unless they have a proven track record. With consumer-grade, I'd recommend you try them before you buy a stockpile. In a dire situation, sure, those nutrition bars are better than nothing, but a MRE can improve morale. You've got spare TP, matches, hot sauce, instant coffee, cardboard you can burn, and most of all...variety. I like to keep MREs for disaster preparedness. To keep them fresh, I'll occasionally buy a new case and eat my old stock. Temperature is the biggest concern. Cold/cool = long shelf life, heat = short shelf life.