I'd been considering the Fostex HP-P1 but seduced by the dual funtionality of the PHA-1, I took a punt on one and ordered it from Japan. It arrived yesterday after taking around 3 weeks (3 days in actual transit and 2.5 weeks sat in customs!).
First impressions are good, the design and build are superb, and I'm impressed by the step up in sound quality from the ipod, but I do have a problem. Using the USB from a mac creates buzzing and distortion - at first I thought it was a fault, but then I tested it on my wife's PC and it automatically downloaded some drivers and worked perfectly.
For some reason it doesn't automatically install drivers for the mac and I can't find any to download on the net - would seem odd if they created a device to work with an Ipod that didn't also work with a mac!