I have a Pioneer 59avi with my Mits. 52725 ... I feed the TV 720p over HDMI and I think it looks great. I tried to compare between sending in 480p over component versus the 720p over HDMI, and to me it seems that the HDMI feed is a bit more detailed. Component looks very good as well which seems to indicate that the TVs scalers are very good. I have not tried sending it 1080i to compare how that looks, but may try that out as well. The TV will convert all input resolutions to progressive 720 so even though it the display shows 1080i, it is being deinterlaced and converted to 720p for display.