2nd might lead to a few issues I think since your character isn't yours, its someone elses and they dictate your stats and abilities and everything, a big no-no in tabletops. Multiverse allows the most freedom for character design, but they tend to go strong and die off very fast without constant GM direction. Explorer is the same thing, but it allows a more structured story so its not as taxing on the GM.

So my vote is for explorer.