After reading your responses, I'm getting the overall impression that purchasing a higher quality pc may add some additional benefit by way of brightness and detail, but that I would be better served taking that money, and channelling it (pun intended) into higher quality HDMI's. I'll start there, as I currently have a new DH Labs Silver Sonics. I may just pick up a pangea, to see if there is noticeable affect with my panel.
Thanks again for your input folks. As always, your experience and perspective is highly appreciated.
Gary