I need to pick up 2 250W heaters for a discus tank, one in the overflow and one on the opposite corner of the tank. I've liked and had good experience with Stealth heaters, and like that they are black and easy to hide, have a non-breakable surface and shut off automatically when out of water and turn on automatically when back in water. I think the Ebo Jagers might generate more heat more quickly, but my only objection is that they are glass and if out of water due to a water change, I'm afraid they could break easily. Any thoughts?