If you're like me, you've been madly farming the elusive Great Brewfest Kodo since Brewfest began. Even when I was having a bit of hand trouble, my little dwarf found his way into Blackrock Depths to do beer-laden battle with the big, bad, belligerent brewmaster. But there's an important tip that you should remember while Brewfest continues.
The two spell trinkets are both useful to all spell casters (who don't out gear them) after the content patch unifies spell damage and spell healing into Spell Power. Right now, the Dark Iron Smoking Pipe is a spell damage trinket, and the Direbrew Hops is a healing trinket. But in the content patch, both will be turned to spell power -- the Pipe has 43 spell power and 155 on use, the Hops have 44 spell power, 153 on use.
Of course, this begs the question about how the Pipe and Hops will compare to other trinkets when the patch hits. Timbal's Focusing Crystal from Heroic Magister's packs 44 spell power. You'll have to decide whether you want an on-use bonus 154ish spell power from the brewfest trinkets, or Timbal's on-use proc for 285 to 475 extra damage. The Hex Shrunken Head from Zul'Aman is a clear upgrade from the Hops and Pipe, since it has more constant spell power and high on-use spell power.
Coren's dropped trinkets are equivalent to the 41-Badge trinkets purchaseable from G'eras. The Essence of the Martyr and Icon of the Silver Crescent are both slightly better than either Hops or Pipe since they have 44 spell power, and 158 spell power on use. But for 41 badges each, I'm probably not going to lose any sleep over 5 spell power every 2 minutes.
[Thanks Rikitiki for the tip!]