WotLK Discipline priest pvp

[mushroomssp]

Hi, i've played for a while on this server and i love it! I mainly play rogue but i can manage myself with warrior and paladin as well. I have only one question: what counters discipline priest ? This is by far the worst matchup i've come across, and i can say i quite hate it. They're too resilient and their mana barely goes down. I'm looking for some tips or some classes that hard counter this blasted spec

[Shred92]

udk as usual

[Mercy]

Offensive dispels (Mage, Shaman, other priests etc) and strong constant pressure (as mentioned, unholy dk is a good example) perform well against them.

[Overloard99]

Arms warrior with mortal strike and rouge with deadly poison stack + wound should be the go.