Having sold Sony TVs (and other Sony gear) for a living before moving over to the car industry, I've always thought that both technologies had a lot to offer. Sony, of course, phased their plasma range out completely and so I only really ever sold LCDs but, having seen both technologies in action, I think a lot of it is down to the qualities of an individual make and model rather than the specific technology it uses. I always thought the 32D3000, 40W3000, and 40X3500 were outstandingly good televisions but never thought very much of the 32P3000 or the 26" versions of the S3000 series (viewing angles seemed problematic on these but not on the larger ones).
I think the Pioneer plasmas are glorious and probably the best screens available ultimately, but that is down to excellent execution and product development rather than the fact they are plasma. The latest Sony W4000 series LCDs run them very close indeed.
Personally I use a Sony LCD (32S2510) and I'm very satisfied with it.
T/table: Thorens TD150MkII/Mission Solitaire
SACD: Denon DCD1500AE
Tuner: Denon TU1800DAB
Amplifier: Denon PMA1500AE
Speakers: Wharfedale Diamond 9.1
H/Phones: Beyer DT770 Pro/Senn. HD595
ITS ALL ABOUT THE MUSIC!