Why do you feel the need to buy a stand alone digital recorder?
A good interface, a computer and a DAW will give you much ore flexibility. If you want to record on location, you could use a laptop instead of a desktop. The interface with the laptop will be equally easy to transport compared to a multitrack digital recorder.

If you are looking for a small recorder unit: I've read a lot of good things about the Zoom H2 and H4. (no personal experience with them)