We have two Sams stores in town, the closer one only has the part-skim shredded mozzarella these days, I haven't been to the other one recently to know if they've still got the whole milk version.
Sams Clubs tend to vary what they have by some unpublished schedule, darned if I know what it is. For several years they didn't have the artichoke hearts, now they've got them again as well as the black diamond cheese spread, but I haven't seen the Five Bean salad there yet, or the shredded 4 cheese blend we liked.
I've been using the part-skim one and haven't had any noticeable issues with it. Yeah, a 5 pound bag is huge, and I don't recall if I've seen an expiration date, but it lasts a long time if you don't open it. Once you open it, the clock is ticking and you need to freeze as much of it as you can, or it will go moldy in as little as 2-3 weeks. I freeze it in 6 ounce bags.
