Just posting my thoughts on my new Panasonic L42ET5B before it goes back....
Arrived yesturday, set it all up quickly but was very disappointed with the standard definition picture.
I have Sky with the basic hd channels ie bbc hd etc which to be honest, look good but as soon as I change to all other channels, there is a big difference in the picture quality.
The picture seems dull, patchy, a little snowy and not clear which became very noticeable when watching stand up comedy and the background is dark and at night, I have to select Dynamic mode else the picture is too dark in both hd and sd.
I have adjusted the picture settings constantly to try and bring it to life but then when I revert back to a hd channel, I have to adjust it again to suit.
The sounds just about ok although not as good as and crisp as Samsung.
Not tried the 3D as no demos available and don't have a 3d Blu ray player as yet to test it.
Maybe I'm just really unlucky and got the bad one of the bunch but am now looking at buying the Philips 7000 series at John Lewis, at least I will have the reassurance of the 5 yr guarantee too.
On the positive side, the web browser is lightening fast compared to my last smart tv, as is downloading apps from the Viera Connect market.
Hope this is of some help to others looking at buying one.