depending on your setup (digital external equipment or not) i'd also consider ADAT (8 tracks optical) as a possibility..
the disadvantage of ADAT is primarily it's price and that devices, since this is a digital setup, would need to be synced together
my personal suggestion would be connecting your equipment into a decent d/a a/d converter, running via lightpipe into a ADAT soundcard (i.e. a RME card), but that primarily depends on your current setup/devices