Buy in metal cans, versus pouches and plastic containers.
Your best bets are Aguson Farms (via Amazon), NutriStore (Amazon) (which is owned by Thrive Life btw) and yes, Thrive Life (used to be known as Shelf Reliance). Thrive sells in “pantry” sized cans that are far easier to use up than the #10 cans most meat comes in. They are the only one to use that can size. (Yes, I am a Thrive Life consultant as my disclaimer, but for me I actually use the products in my recipe development).
If you buy FD meat in mylar bags it is most likely repacked into them. This is OK if you are using it up quickly, but every time you crack a can, the time is ticking if you live in a humid area.
So buy oxygen absorbers or desiccant packets to use in your meals and seal them tightly if you are putting freeze-dried into the meals.
And as well, read the ingredient lists. Some companies add ingredients to stretch meat. In ground beef this is normal (absorbs the fat) but avoid TVP as a filler, it can cause….issues you don’t want in your stomach.