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The Mainstay bar wasnt the best. The bar reminded me of SOS survival rations, and the Tac Bar. It comes in a 1200 calorie bar divided in to three separate pieces. The bars are very crumbly and flakey and just a lemon like after taste. These were definitely not my favorite but I can see the usage for something like this.
The Mountain House was the gold here. This was one of the best instant meals i've had in a while. There is also some great texture and flavors here. Easy to make by adding 1 1/2 cups hot water, stir and let sit. The amount of food was just right for 2 servings and I enjoyed every bit.