I bought the hisense 55" on Friday on the ebay 10% sale dayand I am delighted with it. Cost £432 . Highly recommended
Disable motion settings and all should be ok.
Remember you can now get 4k for this much BUT find out their response rates, they will be low and so choppy on sports and games. But you get what u pay for..
Check these reviews before buying from RGB https://www.reviews.co.uk/company-reviews/store/Rgbdirect