MP3 Recorder Recommendation?

Someone here will have a suggestion. I need to record some interviews, and I also want to audio-record the panels I'll be moderating at this year's Comic-Con International in San Diego. (By the way, one panel has fallen through so I'm down from 15 to 14. I have no idea what I'm going to do with all that free time since there's nothing to see at the con and no one interesting to talk to.)

I want to find a small MP3 recorder with a great built-in microphone for this purpose…something that records to either a hard drive or a Compact Flash card. I have MP3 players that will record but I don't like the results I've gotten with them. Anyone have a nomination?