Mr. Spock wrote:
 IIRC the ADI-8 Pro runs at 48K, although, yes, the web page seems
 not mention this (I think I read the manual once); to go at 96K you
 need the Double Speed ADI-8DS: 
That looks like what I was thinking of. Thanks.
 http://www.rme-audio.com/english/adi/adi8ds.htm
 This uses two ADAT cables each sending 4 channels at 96K. Neither of
 these units are cheap though, and do have lots of other features you
 may not need such as TDIF. 
 
Nothing made by RME is cheap, is it? ;-)
None the less, if someone was going to put their money into a company
that has supported the Linux development community, it seems to me that
RME is one of the few real choices people have.
Cheers,
Mark