There's loads to like about the 55UB950V. Its pictures sometimes look awesome, especially in 4K, it's well designed, its price is aggressive by 4K standards, and the new webOS interface works superbly. Shame, then, that its pictures fall prey to fairly serious contrast and input lag flaws.
The LG 55UB950V is an aggressively priced UHD TV illuminated by a ground-breaking smart TV system. But while its pictures can look great with the right sort of bright colourful content, overall its contrast and input lag flaws make it hard to recommend, especially given the quality of some of the UHD/4K competition this year.