How many days will fall between your cook and serving them?
I wouldn't freeze them if it is only a few days. If you do need to freeze them, vacuum sealing them would definitely help, but I would avoid it, if you can.
I always cook more ribs than I can eat in one meal. I cook them on Sunday, and eat them a serving at a time for the rest of the week. I just store them in ziplock bags, and re-heat them in the oven.
I do notice a little change in texture if I freeze them. Taste is fine, but the texture isn't exactly the same.