I played Controller for over a month. Just recently switched to kb/mouse.

The problem I have with a controller is the fact that I can't heal things on the outside of a party, and it makes healing things like Odin, Behemoth a nightmare. Not to mention on Scholar throwing down Sacred Soil is a whole lot faster with a mouse.

Keyboard is absolutely amazing though! I have 2 mouse side buttons, and those I use for mouseover (<mo>) heals.
Alt+sidebutton has my Swiftcast, and my Benediction <mo> for quick and fast BUTT CLENCH heals.


Another thing that made my controller easy is using /crosshotbar change macros. I'd have Cleric stance and /crosshotbar change 2 to switch to my nuking Crossbar, and when I'm done nuking, I hit my Cleric stance macro that takes it off, and switches me back to healing Crossbar. Very handy.