Getting service again in a few weeks. We're getting a hd receiver and two standard receivers. We currently have 1 34" Sony HDTV Crt and a 27" Sony standard crt. We are going to be buying an hd lcd set but are undecided on what size and were wondering how large a hdtv we can have with a standard receiver before the picture looks funny. Should we just pay the extra money and get another hd receiver instead of using one of the standard receivers we're getting. We previously had a sd receiver on the 34" hdtv which looked alright.