I have the Sony ICD-PX820 digital voice recorder and I'm very happy with it. It has 2GB of built-in flash memory, you can store up to 535 hours of recordings and the USB port makes it a snap to upload self hypnosis scripts and affirmations to the computer and use in conjunction with Neuro Programmer 2 or simply download to your MP3. It's so much easier and better to record thoughts and impressions than to try jotting keywords. You can record in detail in a few seconds and drift back to sleep and you don't need to turn on the lights to do so either. I know this is the single biggest factor in going from nearly zero dream recall to remembering incredible details. You'll be happy you got one.