There are TONS of forums in which you will find a lot related information. Google it. My suggestion: if you have valid H1B stamp on your passport, use H1B. But, it doesn't matter if you use AP. Using AP to re-enter is the easiest option. All you have to do is just hand in your passport and AP and they won't even ask u a single question. You can still continue/extend working your H1B even if you're paroled using AP. You can use AP for your spouse/children as well. No problem at all!