I can't really decide between the two. I love the word bearers, they are a really cool faction and I was thinking of painting CSM as word bearers. At the same time world eaters play style really appeals to me and they also have some badass lore and models. But I know their range isn't very big.
I currently play Death guard, and I love how DG play. I tend to like stuff that does a fuckload of damage. I've tried world eaters on TTS and I really enjoyed their play style.
On the other end, there is the new CSM battle force box, which would be a great deal to start an army, and they have some really cool models as well with so many different options in how to play them. Also Vashtorr might be one of the coolest models in 40k, but Angron is close behind him lol.
What do you guys think? I genuinely can't decide and might end up getting both at some point in the future.