I'd also be interested in recommendations on one of these. Could do with one to hook up my new telly to surround processor, which only has a measily 2 optical inputs, but plenty of coax inputs. I could use analogue inputs, but I'd like the digital stream from FreeviewHD. And to be fair, a little jitter whilst watching the IT Crowd isn't going to bother me much. ;-)
One thing I'd like to know, is what power requirements these have, I'd rather not phaff with another wall wart and possibly power it from 5V USB or 12V trigger line if possible.