Monk in my experience doesn't perform too well in Slaughter but I've had some nice matches with it in Secure. One Ilm Punch is great harass versus a scholar (removes all stacks of aether flow if you're lucky) and if you're in a pinch you can chain silence with Perfect Balance>>Arm of the Destroyer.

@OP ninja is stronk but dragoon has a lot of burst like other people said. And for those occasional 1v1 situations Dragoon is a bit more tanky with Keen Flurry / bigger vitality pool / bloodbath / Life Surge