in my main team i am currently playing with the best MW monk in EU. Both him and some other MW's preffer crit. This due to the orb burst healing. The reason why is so they can top them up, as MW you will be sitting in alot of cc, so to be able to catch up crit is a very nice tool. Just make sure you have 3-4000 spirit, and just gem full crit
I dont know to much about MW myself, but the MW monks i play with who have achieved many rank 1's swears that crit is the way to go.
About the gemming :
Yellow - 320 crit
Red - 80 int+160 crit
Blue - 160 spirit+160crit
Meta - 216 int + 3 crit
Also you can play very aggressively with crit wich extremely sweet.
Thanks. Seems like nice view on Crit build

Guys any other ideas? The question is is it worth to build all in crit if its give you only 3-4% of crit at all. Or its better to build int?