I rolled a Monk, just to try it, it's said to be the easier of the two melee focused classes. My god. I've smacked all main bosses without dying a single time, Act 1 main boss in his last phase was ended in one go; he didn't even get to summon his friends. The damage output is insane, at least for now. I have over twice the DPS my Mercenary or Warrior had at the end of Act 2, except I'm still at the very beginning of Act 2 (stacks yield about 950DPS at level 21, and this is without the Tempest Bell wreaking havoc).
For early game (Act 1 and 2 at least), I can't see how anything beats this for bosses, it literally takes less than 6 seconds to mangle many of them (that's the duration of the Bell).

Looks like you found a good build early. I went in blind and my chosen build was pretty bad for act 1 and 2. I pivoted to another build and destroyed act 3.

Waiting for Marauder to roll my 2nd character.

Nice! Monk is fun to play, and can really dominate. I've killed all three Act main bosses on the first attempt. It's actually the weakest against regular mobs, I'm prone to getting swarmed, and getting both high Armor and Evasion is very hard with the current crafting system/tools. I just beat Act 3 normal, the boss was a breeze, but I actually died right away on Cruel (5 Hags summoned bullshit around me, slowing me and eating my HP in two seconds flat).

I think Cruel offers much better gear; literally the first Quarterstaff I bought from Renly increased by DPS by about 40% after using a few orbs. I'm going for Attack Speed, Cold Damage and Frost Build-up + Critical Hit Chance and Critical Hit Damage. Bosses are absolutely melting most times, I usually take them through each phase with a no-hit record, if I manage to Freeze them (and once that effect wears off, they're Stunned due to me whacking them 30 times with the Bell on).