Well I have been using and have grown accustomed to using this kind of UI for both my lock and hunter, I dont have any mods on my priest save for dbm, recount, mik's scrolling battle text and the occasional wow-census (lol).
Anyway heres what it looks like:
Warlock (Destruction spec)

Hunter (Marksman)


but if you're curious..this is my priest ui. I know it looks horrible...I am too lazy to learn healbot and my pc sucks so I can't really afford any nice UI's at this point. :)
Priest (on Shadow spec in WSG)

Rogue's UI..