Looking for tips on requesting a HD receiver for a secondary TV in my home. I currently have a HR24-500 on the main TV, with a R15 upstairs on a tiny, non-HD TV. Upgrading the upstairs TV to a flat-screen this weekend. Whole-Home is not a priority. I want to make sure I get the new HD GUI, and if possible get the smallest HD receiver available due to space issues. If you all have any suggestions on what I should request when I call into DTV, i'd appreciate it!