Zoom H1 or Zoom H2NXT. Both have incredible mic and record on up to 32 GB SD cards. They record at all MP3 rates and at 16bit or 24 bit .wav rates.
The H1 is really small and sells for $99.00 and the H2Nxt is larger but has 5 microphones including X/Y plus mid-side and 2 channel and 4 channel surround sound. It sells for $199.00. The H2 can also change key without changing speed and change speed without changing pitch. H1 uses 1 AA battery and the H2 uses 2 AA batteries.
Great recording devices.