I have been thinking for sometime about buying a Hitachi 42PD5200. The reviews are good, and you can get one for around £1700. However I have now seen the Hitachi 42pd7200. Is it worth the additional £600-800? Does anyone know the major differences? Is the picture quality noticeably better on the more expensive model? It appears to have a motorised stand included, but that doesnt really bother me. Thanks!