I like the trekking bars, although I've never used drops. The wife uses them tilted down a little for a more aero position that lets her take weight off her hands. I keep mine pretty flat, since my bike is quite a bit smaller then I need it to be.
Toss in some Ergon grips and it's a good setup.

The bars are on http://www.nashbar.com, the Ergon grips I got from http://www.treefortbikes.com/