Which cursed blade should I get after Raven Coves quest?

[Catherine Ironcutter]

I personally think it's a matter of personal playing style. I prefer broadswords, however, didn't like the Spinecrest special skill, and so I took Bitter End because of the freeze skill.

It's really a matter of playing style and personal preference - someone who loves sabres will most likely prefer Bitter End, while someone who prefers old-school cutlasses might prefer Nautilus.