There's a good deal to read on POV, in books and on-line. O. Scott Card's book in the WD Elements of Fiction series is fine on the topic.
I've come to my own umbrella decision, and that is to write third person limited, past tense, every time, unless there's a compelling reason to do otherwise. This time, multiple POVs were necessary. How do I know a change is necessary? Er, I just do. The material demands it.
I read 200+ books a year, and I've seen exactly one book in the past year that had present tense first person and needed it. Most of them that were in first person present would have read better in third person past, imo. You may come to a different conclusion for yourself. Newer writers probably should try everything, at least for a long short story's worth, once...including some form of the second person, and various levels of third person limited (you can stay over the shoulder or you can get into the head quite deeply).