Horn of Valor is great. So is Memento of Angerboda. Horn is in Halls of Valor and Memento is in Maw of Souls.
As for stats.. a little more haste wouldn't hurt.
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So interesting little thing I found on simcraft, on my character the difference between 10710 (28.56%) haste and 11089 (29.57%) haste (a 379 point difference of haste alone) using Blade of Wrath is 13k dps, which is pretty significant. Haste just gets better after 29%. I can't pinpoint exactly why that would be the case, though.
EDIT: Pic to illustrate what's going on: