Ill be subbing Sam under my DRK endgame, but in the meantime im using DRK/THF. Monks i believe are the only ones who can outdamage drks aside from rangers, i think in melee. The nice thing about DRKs are that aside from dishing out nice dmg, you can bust out A LOT of dmg at once or in a very short period of time giving u slight control over aggro. The same can be done with thf, but you must rely too heavily on group members, which is why I dont like that sub. With the SAM sub I can dish out quite a bit of dmg in about 15 seconds most liekly grabbing the hate and being able to control it somewhat. Its taxing on the warrior and WHM, but you really need to have decent knowledge of ur spells and class. Its more stressful on the WHM than anyone else, but you wont be called a "suicide knight" for nothing. Better being the guy who takes a fall for his group than the key members. You can function with less DD most of the time, you wont be able to continue fighitng when the tank is crippled from rez effects.