The LG UP8000 is a higher-end version of the LG UP7000, and both TVs perform okay overall. They each have the same features, but the UP8000 is a bit better in a few areas. It has better reflection handling and a quicker response time, so motion looks better. Also, the UP8000 can remove 24p judder from any source, while the UP7000 can only remove it from native 24p sources. The UP8000 has better out-of-the-box accuracy, but this is something that can vary between units.
With One Year Warranty