The only big downside of the Sony R450 LED TV is its very limited viewing angle. If you are always sitting in front of it, you will appreciate its good blacks and very good motion handling.
If you can get past the narrow viewing angle, this Sony R450 LED TV is a great choice in this price range. The picture quality is great, both for video games and movies.
Unfortunately, the Sony R450A has a very limited viewing angle with poor color uniformity at an angle. If you watch TV from the side, go for the LG LN5400 instead.
For its price, it handles motion very well. It has a minimal amount of blur and it also supports 24p playback for movies.