I prefer MC monks. SC monks are a bit dull. Once you get Whispers on the Wind your fights are mostly using that as much as possible.
Transcendents are really good. Particularly FF / soul blade. Have more accuracy than SC monks with a bit of work, more versatility, soul annihilation fulfills a similar role as resonant touch but can be used more often, you can disintegrate things, etc. Needs community patch for FF to build focus.
Brawlers can be quite good if you like tanks. FF / unbroken probably being the most tanky.
Wanderers can reach high amounts of accuracy. Probably won't surprise you I like FF / ranger. You can even play ranged with Instruments of Pain, but pretty sure FF attacks don't benefit from driving flight. You can use Long Pain Fists with normal fist attacks though, using animal companion and dichotomous souls to keep things off you. Works well as shattered pillar with the community patch, you can generally maintain enough damage and crits to keep up the long pain fists.
Have also played votaries, cantors, ravagers, and sages, all of which have their selling points, but my favorite is probably transcendent.
If you're willing to go through the blood mage deification process (buff self, blood sacrifice to near death, drink potion of final stand, put up walls of draining every 30 seconds), then helwalker / blood mage is insane. Blood sacrifice creates wounds, and you can spam it endlessly since you won't day, then use citzal's spirit lance and stunning surge on groups. Or spam raised torment, skyward kick, etc. Or you can play it as a caster just using helwalker for the +10 might and +10 INT.