I have both a Panasonic plasma and a Sharp LCD. No real problems with the either one so far but my extended warranties are already up on both, so knock on wood. The Sharp LCD exhibits really annoying banding though, but I just learned to deal with it since I can see it on most LCD sets.
ht Panasonic 60" ZT60, Monitor Audio: Silver RX6, RX Centre, Radius 90HD; Martinlogan Dynamo 700, Marantz SR5006, PS3, Oppo BDP-103D
2ch Sony KDL-32W650A, Sonus faber Toy Monitor, REL T3, Marantz PM8004, Sony BDP-S1000ES, JVC T-X3 tuner, Apple TV, Peachtree Audio DAC•iT, Sennheiser HD598
pc Energy CB-5, Audioengine D1, FiiO A1