As a personal preference i prefer to stand in the circle. I rush to be first there so i am hoping to get marked as 1. But then the other healer shouldn't stand near or in the circle at all. Lots of healers lately have been under 4k in hps. Which is fine but they need to be able to move and avoid. Second I don't care how much hp I have. If there is only one healer don't expose them by making them run to or past the circle. For using cool downs for casting I am half way decent. But you can get locked down, I always see people quote diminishing returns of stun but I am sure you can be stunned for almost 60 seconds before a resist.

As to the very main topic, get in the circle. I have never in 283 matches seen anyone say that.