I bought this tv hoping and praying that any of the previous backlight bleed and clouding issues had been sorted, especially after the stellar review what hifi had given. Thankfully they have been fixed and the overall tv experience has been improved dramatically over the w5500. I got my parents that tv last year which had these problems, and although they the clouding was not significant it was noticeable in dark scenes.
SD picture is great but HD is where this tv excels. The freeview guide is so much better than on the w5500 and is very clear, as are all the menus and xmb. The remote is also very nice and classy looking, along with the rest of the tv. I dont really have much use for the internet tv stuff or video playback as i have a ps3, but it seems quite useful.
The only downside with this tv is that it doesn't have a proper off button! This is only a minor gripe but previous sony bravias can be turned fully off on the side of the telly, using less energy than standby.
Overall the best telly ive ever had and great value for money, easily worth a grand, if not more.