[linux-audio-user] which device to purchase for SP/DIF or AES/EBU?

I have just installed AGNULA/demudi-1.1.0 in my desktop machine (Intel Celeron processor). My need is to transfer two channels (that is, stereo) digitized sound back and forth between a Tascam CR-RW2000 and a Pentium-class desktop computer, so that the sound can be edited. The Tascam has both SP/DIF coaxial and AES/EBU inputs and outputs. I have no need for multi-channel operation (other than stereo), nor for midi or routing. Recent postings on the alsa-user mail list make me lean toward purchase of a RME sound card, but I am confused as to which RME cards ALSA supports. I also am confused as to whether a "multiface" or "digiface" is required. The RME web site says that ALSA drivers are available for the DIGI9652 and the DIGI9636; but these models are not listed on the ALSA Sound Card Matrix web page. Another possibility is to purchase a USB or Firewire device which supports SP/DIF or AES/EBU input and output. The main consideration is ALSA support: which devices (manufacturer and model) work reliably and bug-free under ALSA? RLH