The good thing with hast and SB destro build is that it cant ruin any form of spellrotation.
So yes haste is very good.
But, its not haste or crit, its.. Yes please Ill have both ^^.
But as a general rule, always value haste rating more than crit rating.
So for gems, haste would be a better choice than crit. Making fx Reckless Pyrestone the best Yellow gem (As long as you are hit capped ofc).
Generally crit is not something you should go for. It should just come naturally from gear.
Good luck
