After umming and aahing for months I finally purchased the 55" directly from Sony at the back end of last week, just as the price went up (had it in my basket from the day before for 1299 and the price went to 1599, so I thought 'why not?' and pulled the trigger.

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Anyhow, it seems I've won the panel lottery (yay!) as I can't see any issues on any slides (build date 12/21) and coming from my aging samsung 48" h6400, and after a bit of fettling the picture quality has simply blown me away.
My issue (there's always something right?) is with the built in TV guide. I've upgraded the firmware to get the UK catchup apps, so don't know if the previous firmware was the same.
When selecting a channel from the tv guide, instead of just changing to the channel, it pops up an intermediary screen with a description of the programme and you have to click 'View' to actually change to the channel... I've searched but can't find a setting that just makes viewing the default action to save the extra step. Yesterday, this extra step ground to a halt, it took a minute from the description screen popping up and me clicking view to it actually changing the channel. (so annoying I even took a video, in case I decided to return the tv!) Unplugging seemed to fix it, but it's still slower than I'd like and the extra click is an irritation.
So, part two (sorry), the Youview app, doesn't have this irritation, so I want to use that instead of the built in TV Guide.
Has anyone found a way to make the 'TV' button open the Youview live TV and Catchup App instead of the built in TV Guide? It's not on the list in the TV Button Shortcut setting... if not, maybe they'll add it via firmware as google tells me that some Sony TVs can assign the TV button to the App...
Oh I found a bug in the channel re-ordering process too, after I'd reordered them, changing to BBC News actually displayed BBC Four instead (whilst still saying it was on BBC News), retuning and reordering again did the same, finally got round it by exporting the channel list via USB and reordering with the Sony Channel editor and re-importing, just mentioning in case anyone else has the same problem.
Cheers
Rich