I agree that EE feels overkill and because of the downtime between fights PS works better (and the same for soloing/questing).
I haven't had much luck and am rocking a lot of crit and no versatility. I think it works out to be 38.5 crit, 33 mastery, 8 haste and 2 versatility (all percents). I hear what that fella is saying about 8-10% haste feeling much more enjoyable. The thing I want most right now is for haste to be made more beneficial.