Zoom H1 Audio Recorder

Check pricing and availability: B&H | Amazon

I find myself using this little guy more and more often as the basis for a lav/bodypack system when I'm recording interviews or conversations with industry folks. It's a faster setup (I just leave it on me all the time and don't worry about battery life) and I don't have to worry about interference the way I do with wireless systems. It's a great value, because the audio is great, too.