They are not all the same. Although, I gather some of the innards are OEM'd--I think the Sony and the Zenith, for example, share insides. When I was looking, I thought the consensus on www.avsforum.com (wackos as serious about video as a'gon users are about audio) was that Zenith's box was one of the best.
HDTV receivers. Does it matter?
Do all HDTV brand receivers have the same picture quality? Are all receivers sending a 1080i signal going to look the same to the naked eye if used on the same HDTV-ready set. Is the difference in brands and pricing due to features and less on picture quality. And can a weaker signal affect the sharpness of the HDTV screen. Or is the signal either in or out? Any opinions?