I hate to throw a spanner in the works but after reading the rave reviews on the W4500 series LCD's I thought I would check them out myself and to be honest I was a bit underwhelmed.I had a look at both the 52W4500 and the 40W4500, both reasonably set up.
True, Blu-Ray pictures were most definately the most detailed I have ever seen but SD via Freeview and SkyHD was not particulary great, certainly not as good as the PX80 and blacks also were not as good as expected.
However, the real stumbling block to me was the backlight bleed that both sets had from the bottom corners of the panel.I certainly would not be happy if after paying out a lot of hard earned cash on a top end product, there was such a glaring problem as this.
Personally, I would save yourself a heap load of cash and go for the 42PX80.