any one have direct exp with hi-end hard drive?

I do now have the Sonus wireless system hooked up to my DAC....pretty good for background but good enough for serious listening

I am sceptical that the MP has been derived from the video arena. Rather, as one of the reviews points out, the RUR process is derived from something the audio recording industry already uses. But that is only one third of the story. Then you also have to consider that the Error Correction Codes for video are much more sophisticated and are not compatible with the Reed Solomon ECC used for the Compact Disc.
Furthermore, the MP uses a flash memory for storing the data that is to be played back. Put RUR, dropping RS-ECC, and playback from flash memory all together, and the MP moves into the unique category. At least from what I have been able to construe.
Go to www.thememoryplayer.com for more info yet.

These are generally called "music servers". The hard drive is only a place to store the data. It does not "play" from the hard drive like a CD plays from a Transport.

The memory player and the Zero-one are the only ones that I would consider high-end, at least in stock form.

I'm using the TI 48 from Zero One since almost 1 1/2 years and I'm very happy with it. It has replaced a Audio Meca Mephisto II.
It is not only sounding and looking great, it is also very easy to use and it is totally independent of a computer.
Soon I get it's soundcard modded. That will be interesting