I would vote for the Gossen DigiPro F, it takes a single AA battery and unlike the Sekonic 308 can be set to aperture or shutter priority. The Sekonic can only be used as a shutter priority meter, so you can find yourself scrolling through the reading until you get to the aperture you want to use. As a reflectance meter you can also rotate the head of the Gossen to face the subject, on the Sekonic you have to turn the display away from you each time you take a reading. Small things, but they help if you need to work quickly.

Steve