So, I'm an ilvl 498 frost mage, and I roll with living bomb. I was checking out my stuff on askmrrobot, and looked up some haste breakpoints just out of curiosity. Predictably, because nether tempest ticks a lot faster than living bomb anyhow, you get a lot more haste breaks and many more ticks. For instance, at 29% haste, you get 4 more extra ticks out of nether tempest, but it takes until 37% haste to get even a second extra tick out of Living Bomb.
Does the extra damage from living bomb scale well with haste this way? That is to say, Let's say I'm a mage between 29 and 37% haste (in fact I am - 32% with full raid buffs), would it make more sense to go nether tempest until I hit 37%, because it has 3 more extra ticks on living bomb at that haste level?
What I'd really love is if an article explaining the math existed out there that someone could point me to, but I'd just as happily take a brief explanation from one of the more mathematically gifted among us :)