So I just dinged 70 a big ago, and I find it difficult to imagine switching from a build that focuses mainly on Crit (That is really all there is prior to 70) to one that is more haste focused. I am not sure that Haste is worth it in the relatively small quantities I find now. As a note, I just started Northrend.
Do any of you have a feeling for how much haste you need to see an impact?
What level should you really begin focusing on haste?