Well this has been an interesting piece of research. Whilst I have had some conflicting advice and not everyone knows how i-Tunes works this is where I am at. i-Tunes only works when it can read all drives ie all drives are connected to the laptop or desktop. This is important, if correct, because I was thinking about buying a Glyph with multiple swappable drives and I will not be able to go down this route. I do not know the technical or operational reason for this. Can anyone confirm? I also have followed the digital thread with interest. Jitter seems to be where it is at. My conclusion at this stage is that i should buy an i-Book with a USB external soundcard and a Lacie 1 terrabyte drive. I am not sure which soundcard to buy. I am thinking of the Apogee mini-Dac as it is the very best (read most expensive - but has a reputation) in terms of Jitter and sonic abilities. (In the pro-audio world most of the high end stuff is multiple in and out and I just need stereo out.) Tony has been talking about the M-Audio recently (and in bake-offs) and this is also worth checking out. All in the i-Book, DAC and Lacie drive will cost c £2500 - £2800. I will take the digital out of the DAC into my Wadia (unless the Apogee DAC is better than the Wadia) This puts it at the same price as the Imerge (limited hard drive upgrades - I can have 3 terrabytes plus with the i-Book) and maybe the DAC is not as good in the Imerge? There is also the Cyrus (re-badged Imerge with some upgrades but at £3600 is expensive and HiFi Experience's view is that it is only as good as the standard Cyrus - maybe off the pace of what I am looking at. On this basis a no-brainer......but wait....what about the power supply and all the other stuff that goes into making a transport really good that an i-Book cannot deliver. Well, I do not know the answer but in my studio I have been listening to i-Tunes (uncompressed) on my Carillon PC with Soundscape (high-endish) Soundcard through a Soundcraft desk (pre-amp - a bit warm and wooley) and a pair of Dynaudio BM6a (£1000 active monitors). In the scheme of things a modest system and it sounds off the pace of my home setup but very listenable; no trace of harshness or hardness in the sound, lots of detail but lacking the clarity and emotion of the Wadia etc. My next steps - I am planning to have an extensive home demo with an i-Book/Apogee/Wadia Vs Wadia/Wadia & i-Book/Apogee Vs Wadia/Wadia & i-Book/M-audio/Wadia Vs Wadia/Wadia & i-Book/M-audio Vs Wadia/Wadia etc. If anyone is interested in a small bake-off purely focussed on comparing hard drive systems Vs traditional transports (feel free to add a transport or two) then let me know. I am in London SW18. This will be on a Saturday during the day and I could accommodate say 4-6 in comfort so that all could have a good listen, a larger group may be possible but it would slow the day down. Food and drink will of course be provided and there are good pubs and restaurants within 150 meters of my house. I have yet to get to a bake-off so it would be good to put faces to names. Cheers Dominic