I am confused as to what is going on. Currently I play my PC on 17 Inch CRT and my 360 on about 21 inch normal fat tele. I want to get a new one for my 360 but I am unsure about which one. Does LCD play HD or do i need a HDTV for that? Plasma/LCD-what is the difference? Could somebody clear things up about what TV does what and anything like that? Thanks.