LG 60PZ570T question need help?

hi at the moment i have the samsung le40c750 lcd tv i am wanting to upgrade my tv to a larger screen i was looking at the lg 60pz570t i can pick up the lg for £850 amazing price for a 60 inch 3d tv but would the picture quality be as good on the lg compared to the samsung i have already i want great picture quality and connectivity and features if the lg picture would not be as good can any body reccommend a 60 inch tv that has better picture quality then the samsung i have £1500 max to spend and i dont want it to get out of date to quickly need help asap thanks