I'm thinking of picking up one of these for temporary CD/SACD playback until I can get something 'spensive.
http://www.amazon.com/exec/obidos/tg/detail/-/B000UIA6YM/ref=ord_cart_shr?%5Fencoding=UTF8&m=ATVPDKIKX0DER&v=glance
Aside from having optical to my DAC3 (which I'm convinced sounds better than USB on this particular DAC) I can listen to discs while ripping other CDs in EAC, and not tax the computer as much. I often have a huge backlog of new CDs that need to be ripped, and it becomes a choice of listening or ripping, when using USB.
I'm eyeing various Esoteric units. I've got half a mind to go for the P05/D05, but that would be months and months of saving. It would definitely be the most expensive purchase I've ever made, lol. I'd need something to tide me over I think. If I go with something like an X05, it wouldn't take that long.