Dear Pioneerblue,
Thanks very much for your helpful post.Since your post my friend has come round and plugged his pioneer blu ray in to test your advice. We set the player to output at 1080i. The picture looks stunning. The scene in Hong Kong ( Dark Knight) looks crystal clear. The movement is so smooth and natural......I love my television,,,,It turns out I didn't make a school boy error after all..... and may be by luck made a very good choise of television.
Oh yes and the sound was well.........superb...
Thanks everyone for all the advice and Pinoneerblue for showing me the way........A Pioneer it is then.

Monitor Audio Bronze 5.1 Speakers......AV receiver : Sony STR-DH800....Laptop streaming Spotify and Chordette Gem DAC..........Samsung Plasma,,,,,,,Chord Speaker cable...........QED interconnects.........IMAX Cinema.