I'm designing a dual-column book that will have quite a few tables, charts, maps, and informational graphics of all sorts. The subject matter is the U.S. disaster relief efforts for foreign disasters; serious, academic, and rather dense (in the sense of detail and information).
For the body text I'm going with Kepler semi-condensed. One especially nice feature for this job is the caption optical size as this document is heavily footnoted (sidenoted actually). Could I be talked out of Kepler? Sure, but you better hurry.
For the tables, charts, maps etc.,... I want to choose an appropriate sans. It would have to work well at small sizes, have lining figures, and be somewhat narrow (some tables will have a lot of info). What would work well with Kepler? I want to maintain the serious and academic tone, but this should be a little snappier (whatever that means...sexier? More lively?) than your average text book.