On balance; I'm going for the LG PX990. Available for £1,050. http://www.buydigitaltv.co.uk/product/view/1014/LG-50PX990.html
The Panny was too expensive at one and a half, the Samsung 7000 looked pretty cool; but the LG has the best spec. (What with THQ certified 3d 'n all that.)
My only worry was the 40ms lag. However there is a gif in the PX990 owners thread somewhere that demonstrates the effect of input lag on a milisecond sliding scale. Very useful indeed.