Trinket question.

[Nnoitra/Jake]

I can not decide which trinket to use.

Right now I'm using:
http://www.wowhead.com/item=58483
http://www.wowhead.com/item=59515


I was thinking the one off magmaw to replace the vial on certain fights, but I can't decide how much the mastery on the alch stone is worth.

Is it better than running the heroic versions of the two other trinkets? Is it better than running both normal versions?

I think it's better to have than one of the other two in normal for sure, but have no idea on heroic. Thoughts?

EDIT: Added Armory
http://us.battle.net/wow/en/character/malganis/l%C3%ADghto/advanced

[Katzazi]

Trinket decisions should be made per encounter. If the encounter is magic heavy, the baradin trinket may be something to think about (well as a DK you have good magic reduction CDs so it may be less optimal for you), and stamina may slightly more important than the other stats. For chimaeron high stamina is probably the best for dks because of the encounter design, while every selfhealing is worthless there for the soak tank or each tank on heroic mode. There is just no general answer that works everywhere.