Originally Posted by Nativa
Purified Lunar Dust
That is the best combination of the two and here is why. As a restoration druid (post 3.3) you should be going for haste cap passively. Having a trinket which procs for haste will not benefit you. While if you did number crunching the Ephemeral Snowflake may result in more mana replenished, the proc should be worthless when you get your haste up to desired levels.
"In anything, if you want to go from just a beginner to a pro, you need a montage." /w TankSpot WTB Montage for Raiders.