Favorite Warp Drive Direction

Do you have a favorite warp drive theory / direction?

and / or

Are you aware of a mechanism to measure bending spacetime in a laboratory?  This question is based on the idea that there is not enough known information to construct a testable theory of faster than light travel, so a better path may be to see if spacetime can be bent in a laboratory, & construct theory if something works.  In the movie, "Oppenheimer" the scientists working on the atomic bomb discussed advancing with both a theoretical & empirical strategy.  So if there is not enough information to construct a viable theory, then maybe empirical options can lead to a breakthrough.