I think you can now add the Ipod to the list !
The Wadia 170i Transport is a dock which has an SPDIF coax output (proper output as well, not synthesised from analog but straight from ipod somehow bypassing the analogue stage). £350 in the UK.
Wadia 170iTransport Home Page
I'm now thinking of seriously converting over to this or the Archos from my CD player.
Does anyone know whether with the Archos/rdock you can plug in an external USB hard drive and browse it as if its an internal drive to play music ? (rather than just using it to copy files to/from).
If you can that will probably tip me that way as I'll just rip my CD collection to WAV's initially. If you can't I'll probably go the ipod/Apple Lossless route.