Rank 3 haste up, so replaced my rank 1 and 2 with 2 of these. We shall see what difference this will make, not expecting a huge difference.
EDIT:
I thought screw it, someone was selling a 15 boost, so I took it (TD). A prot warrior, holy paladin, enh shammy and a BM hunter. Came 4th in the DPS. I don't know too much about shammies, but I was impressed. The warr was 3 ilvls bellow me, the shammy was 1 ilvl above, the hunter was 5 below. I think I barely managed 50kDPS overall, the tank was 58k, the hunter was about 78k and the shammy was about 83k. Clearly there is a skill gap between me and them, they were all mythic raiders, though I have to say I was disappointed in not being able to do more damage than the tank overall. Even on boss fights I was third on most.