I am considering getting a PMP soon, and are looking at 4 devices:
1) 5th gen iPod
2) Cowon iAudio A2
3) Creative Zen Vision
4) Archos AV500
I'm not too worried about the price (still want value for money though).
Currently i'm swaying towards the A2, as it's got USB host interface on it (read: can run USB devices through it, i.e. portable HDD's). I am wondering how far this would go, as I don't know the OS, and most USB deivces need drivers (will happily accept corrections on this fact though).
However, still not made up my mind, and still have some time before they properly get to market. Just putting this out here for some feedback/discussion from fellow geeks...