I use one for meats, storing dried hot peppers, leftovers, etc. For instance, I might put leftover barbecue in a bag, seal it, put it in the freezer. Later, I'll pull it ot and throw it in a pot of boiling water. After it heats up you have hot barbecue and you don't have any utensils to wash up.
I also make hamburger patties and cook a bunch of them. Whatever is left, we seal, two to a bag, and freeze them. My wife and I just had two tonight for supper.
I took a bunch of bluegills and pureed them in the food processor. I then sealed and froze them. When I get ready to cook them, I mix some onion and green pepper in with them. I then shape them into patties and fry them in a little oil. They hold together well and make a nice-sized piece of fish. I've never done this, but you could probably add a little filler such and bread crumbs or cracker crumbs to make the fish to a little further. You might also be able to make a nice beer batter to dip them in and then deep dry them. You'll think you're at Long John Silver's
My only issue with my sealer is that sometimes that seals fail. Even when that happens it doesn't seem to have an adverse effect on the quality of the frozen food.
I have one and put up my deer in them. Worked great, except i marinaded some of the meat and vacuuming the "wet" meat was a bit of a messy challenge.