I found that the picture quality was ... better !
The comparison was side by side in a dealer's studio. Also, I did not like the fact that Pioneer is giving up the production of Kuros but this was not really important.
Since we purchased the set, I (and my wife) cannot imagine how is it possible not to use Ambilight all the time! -It appears that Philips has taken over the world market of high quality TVs. Just have a look at the trustedreviews.com reviews. Kuro is of the highest quality too, but - in my opinion - already outdated.
Philips 46PFL9704H, Denon AVR 2310, Blue-Ray LG 390, Monitor Audio Radius HD ("One" - three in one sound bar, R45 - surrounds on MA stands, R360 subwoofer), Wireworld Stream 16/2 speaker cables, Profigold Vision HDMI cables, n-HD satellite platform