Welcome back to The Attraction Doctor Experiences with online dating tend to be mixed.
After your narrow it down, rather than just "shopping", talk to those who make the list.
Fortunately, the psychological research just happens to have such an analysis.
Finkel and associates (2012) put together an extremely comprehensive review of the literature investigating various aspects of online dating.
Thus, while you may have to date a few matches to find out who is a good fit for you, matching can help you avoid those who might be a disaster.
Beyond that, it might be best to trust your unconscious feelings too as your implicit "gut reactions" can have a big impact on attraction. Communication - Online communication is designed to make an initial connection, not set the foundation for a whole relationship.