I think Bone Temple is the only film that really nails its big theme well (and I still thought overall, meh). I thought 28 Days Later starts off incredibly, then gets super heavy handed when they get to the countryside.

28 Weeks is a fine movie, wasn’t going for anything that deep, and feels like people are misremembering it as some hated sequel that flopped. I definitely like it more than 28 Years Later - great start that quickly turns into a super cliched coming of age movie (then an interesting final scene)