Also, the H10 is based on the portalplayer chip (just like ipods), which is undocumented.
Due to this, rockbox control the hardware 100% the way it should, resulting in bad batterylife compared to the original firmware.
The Sansa (from sandisk) is a new target that is gaining recording capabilities, but due to hardware design mistakes, there is interference from the LCD on the recording. Yes, what a design error