Ok - like so many people I decided to upgrade (from an excellent Phillips 32" CRT) to an LCD, and after months of deliberating I decided to go for this slightly more expensive model.
To keep it short, and in line with the other reviewers here, the image quality is simply excellent, both in SD and in HD. The built in freesat and freeview work very well (after you get over the Viera software quirkiness with the menu. like how much space the left side takes up and the channel select confirmation every time you navigate and select via the menu system).
Oodles of other features that will keep you busy for a while.
HOWEVER, and this is a big however, there is a chronic sound problem with this model THAT IS FIXABLE. I will describe the problem first and then the remedy.
It seems at certain frequency transmissions or on higher volumes the plastic casing seems to resonate which causes the sound to distort and it is rather annoying, especially as it is an expensive TV unit. I was genuinely horrified when I turned it on and flipped through a few channels and the sound was basically terrible i.e. distorted by the vibration of the back panel.
To make this better whilst you wait for the real fix, go into sound, turn down the Volume Correction quite a bit until it is almost off, adjust the bass and treble down a bit and then you have to turn the volume up quite a bit to get loud sound, but it helps reduce the distortion. THIS IS A TEMPORARY FIX!
Now, I sent Panasonic UK an e-mail describing the issue, and after a couple of weeks they contacted me with an explanation that a physical fix has been identified by Panasonic and to contact your local Panasonic support centre, which is listed on their UK web-site. I did this and the guy came round and fixed it unded warranty - no problems at all and he did a great job.
The fix itself was to completely remove the back panel and fit some special foam padding designed for these tye of speakers, so when the back panel was re-attached it was squashed into the foam slightly and hence all vibration generated is absorbed and no stupid distortion.
This was done a week back now and I am so pleased because I can have the TV up pretty much as loud as I want with the Volume Correction, bass and treble turned back up with no distortion - woo-hoo!
So the upshot is this - before the fix was in place I would have awarded quite simply a 1 star, because spending this sort of money and having poor sound from Panasonic is not acceptable. Aftr the fix I can honestly award a 5 star because I am now very pleased, although Panasonic should really have caught this in their Quality Control before shipping the units commercially!
Anyone experiencing this problem should definitely contact your local Panasonic dealer and get it fixed - you will be so pleased!