I would recommend it. Im not done the story mode yet but online and zombies are fun. Zombies had a huge revamp which increased replay value. If you're still hesitant to buy the game, just rent it.
I've been watching my brother's live stream (since I can't find gameplay vids that DON'T have commentary....) and it looks pretty fun. Zombies is always fun, specially with friends. I recommend it. If you're "thinking of getting it" I say you get it ONLY if you have played other multiplayer CoDs && if you're good.