US MRE’s are kind of mediocre in general. Canadian IMP’s are similar. The chili-mac one is decent, and by decent I mean it tastes a lot like chef boyardee. The pepperoni pizza is also real nice. The foreign ones, namely those from Europe, are almost always awesome, but they can be difficult and/or pricy to get.
There’s a lot of them out there, and if you want a strange rabbit hole to dive down, there’s a couple youtube channels who focus solely on “reviewing” military rations. Steve1989 is a good place to start.