Which 2-Step Funnel Is Better? (Just Opt In VS Opt In+Revealing Info On First Page)

OR should I just keep it as a simple Opt-In Page that teases them by asking them for their email to get all the juicy info on the next page? This is for ...

from Which 2-Step Funnel Is Better? (Just Opt In VS Opt In+Revealing Info On First Page)