I like deep POV – I have a number of chapters in my current novel manuscript which are honed purposely in deep POV (some for the MC, some not. It’s also difficult walking on the edge between first and third person, sometimes I slip and write a sentence completely in first person. That’s when it hits me how effective this technique is. Overall, omniscient third person (my general POV for this novel) is a challenge. When I read a novel in first person at night after editing all day – I get POV envy.
Here’s a great article on it: http://talktoyouniverse.blogspot.ca/2011/11/checklist-for-deep-pov-in-1st-or-3rd.html