Why buy an hd ready tv !
Good analogy - it's only worth buying an HD TV if you have some HD material to play on it. If you only have non-HD material then you might as well save some money and get an SD television. By the time you have some HD material and need and HD set, they'll be twice as good and half the price.
I'll get a quad core when it'll actually advantage me. For now, my £130 4Ghz dual-core does a better job in virtually app and game I use.