I would be very careful about where and when you TP in Rancor Collar. Proth's advice is always in a "perfect world" scenario where everyone has their own private WHM and MP is unlimited. In reality, well virtual reality of a fantasy game, people are not all perfect at their jobs and you won't have an army of WHM's to personally provide you with Cure spam. That extra +10% damage taken can get you killed, and dead DD's deal no damage.

Basically, if your with a PUG full of people you don't know or trust then don't use Rancor neck. If your with people that are experienced arse kicking mofo's, then use Rancor neck. Best way to look at it.