I bought this unit Friday night for my upstairs tv to get rid of the blu-ray player and xbox (netflix) I had up there.
The 5.1 pass-through doesn't effect me, but it really should be fixed. The bigger problem I have is the unit doesn't toggle on/off the cable box. Also, when I search for shows which I have on my twonky server it doesn't find them. I believe the Logitech box searches twonky's listings.
It is a shame they didn't have built in ir blasters as well as the attached ones and the unit should have an ir receiver. That's just Sony being cheap, which is sad since the unit is so much money, or lazy.
I really like the unit, and even my wife likes it and it's easy enough for her to us aside from the cable box on/off thing. The remote is big, but not too bad. The wife agrees with that. I would have liked it better if it were a slide out keyboard with mic support.
There definitely are a lot of little things to fix as far as feature and UI continuity, but this is a good start.
One thing it really needs is Cablecard tuner support via network or USB. I want to stop paying monthly fees to Comcast for a crappy box, not add another box which takes up space and power. This is huge and I almost wanted to wait to buy a google tv unit for this. I'm hoping my early adoption will at least help the platform grow.
Also, it would be great if someone could get Kinect to work with this. Voice and gesture menu navigation could really speed up the interface. At least we will have Sony's remote app for android at sometime.