Customer since 1997. Have had a few new receivers over that time. Looking to upgrade a few more in the house. Looking to upgrade from 1-Tivo (H100) (I think) 1-HD DVR (HR24-500) (Giving pixelation problems) 1-HD receiver (Will be a new add on) (Which one is the best?) What is the best upgrade wise I should expect on each of these? Any suggestions?