the w5500 is only £699 at richer sounds , the 42pfl9664 is £1500 , whfi said that the sony would have got 5 stars in the review if it wasnt for the clouding on the review set , and , when they reviewed it , it was selling for over a grand ..
if i was in your shoes , id buy the sony with an agreement in place for a refund in the event of clouding , richer sounds will be well aware of sonys potential clouding issues , and will probably agree .
i havnt seen a 9664 , but , as good as it may be , i personally could not justify paying £800 more for one , over a very good sony tv , you could buy a sony bd760 £350 , and speakers ,maybe even an amp for the same money .
i guess it would depend how much you personally value having a marginally better picture ? for me , the choice would be easy , unless i had ALOT more money in my bank account ..