I find insided third person easiest; while first person provides a good focus (varying annoys me), it can be hard to do character development (because of the bias of the character), and it can get annoying sometimes when you have to include stuff that the main character doesn't see (I jsut find doing that in first person very illogical). Third person solves that problem. Actually, I use a combination of insided and outsided third; I have everyone's feelings and the main character's thoughts, but I don't intrude into anyone else's thoughts.