I'm looking at getting a new 36" Tube TV, but I want one that does HD for my videogames(XBox and GCN) and DVDs. I have pretty much narrowed it down to the Sony Wega line, as I love my 27" Wega. Well I was wondering what is the difference between the KV-36HS20 and the KV-36XBR450? Do they use the same tube and processors? Any info would be great as I plan to pick one up soon.