Basically if your a getting HD TV, 42 " Screen or bigger is required to get full benefit
Pioneer Kuros are nice but only 720 resolution , plus they have stopped production of the Kuro Panle due to cost and are fitting them with Sharp panel now under the Pioneer Kuro Brand
Panasonic Viera will also have THX Certification too on certain TV's
THX certification ensures that high definition (HD) and standard definition content are presented with the correct color, luminance levels and video processing capabilities, regardless of the display technology
I have done alot of research Panasonic is the one to get