Troll or Undead Monk?
So if being unique means anything to you, troll would make you stand out more.
Also, the extra 5% damage against beasts is fairly situational, but still a DPS increase should you be fighting any bosses that are categorized as beasts
You won't really notice Troll regeneration to much, but it's there, and does what it says it does, what is it? like 1% health every 2 seconds in combat?
EDIT: 0,0011 x [Your HP] = HP / 2 sec is something I found on wowhead, so just kind of put that in perspective over the course of a long fight
I do enjoy the undeads life steal, I haven't put it to much to the test as a tanking character, but it's extra damage/healing, and it's passive
As far as the racials, Trolls get a haste buff and Undead get an extra PvP trinket. Note that WotF can be used right after Elusive Brew to break fear a third time. Both of them get additional self-healing.
The Trolls' Dead Eye racial won't be much use to you though.
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