Wowhead.com has a most excellent feature that I think few of us use to its fullest extent.
If you click on “Database > Items > Armor”, you can choose ‘Priest’ and then ‘Discipline’ (or whatever) from the dropdown menu titled “Start Weighting… Preset:”.
Doing this gives you a list of all gear for Discipline Priests in one huge list (I’d recommend limiting the required level or iLevel – 333 or higher if you want to run Heroics).
In the results, off to the right, there’s a ‘Score’ that shows how good it is for the spec you selected in ‘Presets’.
The down side is that it doesn’t have any commentary, but for pure numbers and names, it can’t be beat.
Disciplinary Action 
❤ Wowhead! I've used the filters to find quest reward gear while leveling my druid to 85. It's indispensable! Methinks I'll do the same to boost my priest's questing in GTFOrend.
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It’s really great for that; you can focus on the quests that will give you something you really need instead of those plate-mail-leather quest rewards.
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It’s really helpful in making your “shopping list” as it were, so you can focus on where your best upgrades are!
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For sure! I use it all the time for quick reference in under-performing slots.
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Thank you for this great tip! Helped me out for sure. Small thing i miss is that currently Disc has 2 ways 2 heal (tank / aoe). The gear shown on wowhead doesn’t calculate what your role is in raids. I guess a bit of common sence is needed, but hey its a start!
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For sure- you definitely have to have a bit of an idea of what you want to do with your spec, but as you say- it’s a nice place to start!
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