No experience with the 5 minute meals. They look similar to Heater Meals, which I do use. I keep a supply on hand for emergencies, and eventually use them on the trail before they expire.
The Heater Meals are simple to prepare (water activated chemical heaters), tasty and good at what they are intended for; camping and emergency use.
They don't have the shelf life of traditional MREs, nor can the packaging take the abuse in a pack, or the back of a truck, but they are less expensive.
http://heatermeals.com/