MAJOR IMPROVEMENT UPDATE SHOCK!!
today I bought an RGB to Svideo convertor, I did have one previously but it did not work with my 250 PVR. I have been running my picture via composite through a video recorder (dont laugh its the only way that worked for a Telewest STB)
Well the 550 PRO picture on Normal TV is VERY VERY good !!! waheey!! just a touch more sharpness and it would be near PERFECT ( or as perfect as a STB can get!!)
I am a MUCH HAPPIER BUNNY NOW!!