So the last couple days I've just been running keeps 2 or COTA on mp10, experimenting with a few different builds to see which one is more fun.
Infused Bell - Took a couple of runs to figure out the timing properly and once you do its very very effective, massive damage output but sometimes I felt a lack of mobility held me back.
http://us.battle.net/d3/en/calculator/monk#aUXSek!bXg!.bYcaaHybrid Bell build - I really enjoy this one, especially the mobility that dashing strike gives me. Less damage output than infused bell but I found the groups of mobs to break up less so my bells are hitting more targets more often. Getting chased by some fallen maniacs, no problem just dash through them, they cant keep up. The small root that the dash gives is nice also as it gives you a straight shot. Oddly I really enjoyed not using thunderclap, not chasing the mobs down constantly and just teleporting to them everytime it kept things more organised and less spread out, It also helped my survivability as I wasen't teleporting into molten or arcane all the time.
http://us.battle.net/d3/en/calculator/monk#abdSek!bXg!YcbcbaSpeed Palm - Still trying this spec and getting used to the right timings but you do need pretty good gear for this. Like INVIS mentions in his guide an Echoing Fury is garbage for this as you want everything on top of each other. However it seems pretty good and my times are very similar to the others. Feel a little exposed at times not using STI and not having bell to kill the maniacs quickly or being able to dash past them. The fact that the bell isnt knocking back and spreading all the mobs is very nice.
http://us.battle.net/d3/en/forum/topic/8414822220One of the main points of these builds is to stop using serenity to give more build options.
Try them out.
Kobes
The 2h infused bell build that I made uses TR not tclap, so if you need mobility, I'd give that a shot.