Board Thread:General Discussion/@comment-3967802-20131024044838/@comment-24629512-20151204233144

I find the Hallow better, unlike the bloody disease called the Crimson and the demonic possession called the Corruption, NPCs will not move out if it spreads to their house.

It also doesn't cause recurring blood moons. If the Hallow occupies your village, you don't need to worry about either the Corruption and Crimson taking over. Also, Pixies and Unicorns are much easier to deal with than Corruptors and all the Crimson monsters.