I have used Mountain House meals as my primary food source for 2000+ miles of the PCT. They are lightweight, nutritious, easy to prepare, and there is enough variety that I don't tire of any of the meals on a 3-week hike. The empty pouches are a trash issue, but the trash weight is minimal (lighter than full pouches), and I can usually find somebody to dispose of the empties for me.
This review was written in the old system and had content requirements that are different than reviews written today.