I bought this on a bit of a whim and i've got to say it was a good purchase. Easy to use and the wireless is also very easy to use, I just put in my network key and then I could browse files in my shared document folder. I have a lot of films on my pc, most of them being .avi format and it is brilliant at sreaming the film to my tv. No loss of quality that I can see.
If there is was one snag I would say that the forwarding of the films could be better designed as it is fine when you want to forward a bit but when you want to finish off a film that you previously didn't finish, it takes time to get to the point you were at. Could have done with a 'jump to time' option or something.
Overall though I'm very pleased with it