I personally think it's up to the writer's disgression which works best. And the publisher / editor - ultimately.

To me writing 1st p is easier because I get in a character's head much more than writing 3p. It's a psychological thing. With 3p I don't *have* to think like a character. With 1st p I do, which means I have to envision myself as something I'm not - which is incredibly fun.

I've no qualms with 3p but, so long as I have a choice, I'm writing 1st p. If it's later converted into something else, that's fine. But I'm writing it 1st p and doing conversion later based on my own analysis and other people's feedback.

Finally, I dislike juggling point of views. I can't switch voice that many times in one work. My head explodes trying.