Talk:Fire (upgrade path)/@comment-201.1.202.67-20150221024323/@comment-4511886-20150221090826

Demon is the boss weapon path, but it's not something you specialize in, as the weapons are vastly different.

Personally, I'd say both Fire and Lightning. No reason not to do it, as they have similar qualities, but both switch places as the best damage type throughout the game. They also use different titanite, which means that you're guaranteed to get the Slabs needed for both weapons, if you actually pick them up.