As for speakers, I have used Aperion and JM Labs Cobalt's, both very clear and revealing. The TV is a Pioneer Elite plasma. You may be surprised at how disappointing the audio quality of the Elite is. I also have a smaller HP plasma and the built-in audio is fantastic. Saying that just made me realize that I don't have a complaint about the audio coming out of the HP plasma, which is supplied by a non-HD DVR, and no additional audio gear. We just use the TV's built-in speakers because it is in a small room and it sounds so good already. I am not using a power conditioner with it as it is wall mounted.
As for the Elite, I am already connecting the HD-DVR satellite box directly to the TV using a HDMI cable, bypassing the pre/pro. Using the built-in speakers supplied by the HDMI sound just okay, not what I would call good. The digital harshness is least apparent using the built-in speakers, compared to the TV audio coming out of my sound system. I have been running digital audio from the HD-DVR satellite box to the pre/pro using coax, so I will replace that with TOS link(I had wondered why TOS link was developed;thanks for explaining that)
I run the power cords of the satellite box and the TV to a separate power conditioner than my audio gear.(PS Power Duet, one going to each side so they are partitioned from each other, supposedly) One Duet conditioner for TV and satellite, partitioned, and another Duet for the audio gear, with partitioning between digital and analog gear.
Please let me know if you think of further suggestions. I really appreciate what you have already told me.
I think I will do some substitution and try to emulate the HP set-up to see if the Elite improves in sound. Thanks again.