Is the TH42PX700 worth the extra money compared to the th42px70? Seen the TH42PX700ped in costco earlier for £903 including VAT, is it worth this sort of money or i do buy a th42px70 from ED for £799? How much better is it? I will be using the TV for Sky, Freeview and normal DVD's. Also going to be getting an xbox 360 soon.