Originally Posted by
darkwarrior42
I know a lot of people don't like that much haste, but I find that I actually rather like being around 8k haste.... at lower values, I sometimes find it annoyying to both keep 100% uptime on shuffle and purify whenever I need to. It's not like I need that much more mastery... I'm running ~8k haste, everything else into crit, and I solo tank Thok 10H just fine without a paladin in the group (and it was Thok that caused me to go for the higher haste value, actually... despite the value of mastery against his huge physical damage in phase 1, I found that I got more value out of more haste allowing me to purify with impunity without losing shuffle).
That said, it really does depend on why you're dying... if you're getting killed by physical damage, mastery is definitely a good way to go. Favoring mastery over haste tends to result in higher average damage taken, but the damage is smoother and easier to heal. Glyph of Guard is situational, but can be amazing if it's magical damage that's killing you... and if you don't have the 4p set bonus, purifying won't be quite as valuable, making mastery more attractive relative to haste.