I am just a new b. and was wondering what the difference between the two technology's. I have a Pioneer 563A and just recently purchased a Panasonic S97. I have a Sony 50XBR-1 just recently purchased. I'm not sure if I notice a difference in PQ between the two players. Also it seems that when I upconvert to 1080i there is some picture noise with the Panny. I want to know if I'm doing something wrong or do I have bad equipment. Please comment.