I think you should go with whatever class you find to be the most enjoyable! Not every class is for every person and that is why there is variety.
Don't take everything on the forums as the end all. If you were interested in MCH I would at least give it a shot before deciding not to play it(I almost didn't level it because people said it was so boring but I actually really enjoyed it). Heck try all the classes that is really the only way you'll know which one is for you.

As far as dps goes I am an avid monk lover and totally say give it a shot! I didn't find it terribly hard to learn. Every class will take time to learn.