A couple of 3.3 burning questionsFollow

1) From what I have read about the Black Magic enchant, it has a duration of 10 seconds, an internal cooldown of 35 seconds, and a 50% proc chance. Assuming an average spell cast time of 1.5 seconds, I calculated an uptime of about 26.3%, which is a little less than what you determined. In 180 seconds of combat, the buff should be up approximately 47 seconds, which correlates to your observations, though the sample size is still small. This calculated out to a static haste rating of around 65.79, but this is based on a few assumptions as stated above and doesn't account for things such as the actual fight time, instant proc from first spell cast, etc.

Since I don't know your exact spec or stats, it's a little hard to say which is better, but generally speaking the Mighty Spellpower enchant will probably be better dps-wise.

2) Again, this really depends on your current itemization. Hit is very valuable until you are capped, then it doesn't contribute to your dps at all. Also, Nevermelting Ice Crystal has a static, constant spellpower increase and an on-use crit effect which can be managed during a fight, whereas Dying Curse has a spellpower effect that is a proc, so it can occur during a fight at a sub-optimal time, such as when you need to move out of fire, etc. Essentially, this is hard to answer without an armory link because it depends on your specific situation.

Edited, Dec 11th 2009 2:49pm by CountFenris

From what I've read on other WoW forums, the black magic enchantment is only possibly better then the sp enchant, for affliction locks. Demo and destro locks should still be going with a spellpower enchantment.

As for the trinkets, if you can do away with the Dying Curse and still be hit capped, I'd personally do it. Like Fenris said, it has a chance to higher your spellpower, but I'd rather take a trinket that has a constant spellpower boost, along with a crit bonus, when I use it.

That said... I need to get myself one. lol