TrustedReviews have looked at the Creative Zen Stone Plus

At 2GB it has twice as much memory as the Shuffle – enough for around 500 MP3 tracks at 128kbit/sec. It has a microphone (the Shuffle doesn't), so you can use it as an impromptu dictaphone. It has a standard mini-USB connection, so you don't have to carry the daft little docking station around with you as you do with the Shuffle, and with the stubby USB cable that comes in the box, you can simply drag-and-drop music files to it, rather than being force to use proprietary software.

Creative Zen Stone Plus Review