I agree, the sansa devices make great little recording devices.  I don't have a Clip, but I do have the fuze, and I used it at OLF to do interviews.  The storage capicity, as long as you plan ahead and leave space for the recording, is great, the battery lasted the entire day and for days thereafter, and the mic and sound quality was fine.  As much as I love my tablet (nokia n800), nothing but the storage is really anywhere near the quality that the fuze provided me.

On the other hand, the Fuze as a media player (even with Rockbox) leaves a little to be desired...