I am quite pleased with the performance with the TV. I was quite skeptical about it's 50Hz refresh rate before buying it, it turns out that the refresh rate does not make much difference to me. It does have very high contrast and brightness. The menu system of the TV could be a bit more user friendly. The audio/video presets are fine in general. However, I had to adjust the video parameters manually when playing PS3 games. It seemed to me that the contrast was too high or brightness is too low when using one of the presets. However, it's solvable with manual preset setup. Good point is that every input remembers its AV preset. So, once you setup the preset for a device, its good to go. Sound quality is standard. You will enjoy more with an external set of speakers (even with 2.1 computer spakers).
Overall, its a great TV for the price. highly recommended!