Being Full mastery will give you the most damage, however full haste will give you more comfort when casting spells, and more soul shards overall so you dont have to worry as much fabout dispellers, all that for a alight dps loss ( if i recall correctly it is around 16%).
Going fully in one of the two is probably the wrong choice thought, you need to find the best balance between the two. after doing some research for the current gear it is best to aim at 7078 haste, for the breakpoint and all into mastery after that(while keeping the hit cap). this might change with the next gear tier. of course in all of what i said i'm supposing haste and mastery both work perfectly on this server without positive/negative bugs, which brings me to my question ; Are there any bugs concerning these two stats ?
