I'm moving up from a 36" Sony WEGA and looking to purchase a RPTV. I've seen advertisements with "HDTV ready". Does this mean an additional piece of equipment needs to be purchased to actually view HDTV broadcasts? Are there any brands to avoid? Any brands which consistently make good TV's? Also...I'm going to check out the BB/Circuit City/Sears in the area, but thats all we have here as far as electronics stores go unless I drive down towards NYC. So if I can score a good deal from an online shop with a wider selection, I might do that....anyone have good/bad experiences with any online shops?