Audio recorder

I use a Sansa mp3 player. The quality is incredible and all the files are recorded in mp3 format. Highly underrated device.

 

I also had the Olympus VN 4100PC, and it worked fine.

I stopped using it after I got a Droid Incredible. It has a voice recorder app that came packaged with it, and works great. It's very easy to jump around in an interview with a touchscreen, especially compared to fast-forwarding like you have to do with most dedicated voice recorders.

That said, the Olympus worked fine. Be sure to get something you can connect to a computer. That can make listening to long interviews much easier, and can make it easy to load the files onto the web, if that's something that might help the story.