I'm here. Currently 4-boxing.

It's a semi-steep learning curve, but once you understand how to set up your classes, adding more classes is a breeze. My two issues I've never been able to really solve to my satisfaction have been AOE's and channeled abilities. I'm in the habit of spamming my DPS keys and that usually doesn't mesh well with channeling. Thankfully I rarely miss it anymore as my group does fantastic damage without those abilities.

Right now though, I'm mainly doing dailies to build up credits for the other groups I'm trying to level.