I bought a 55-inch LED HDTV, the Vizio XVT553SV with local dimming from Sams Club in November of 2010. (after months of research) I have been very happy with the picture and features of the XVT553SV with the exception of the blooming effect in dark scenes like deep star fields in movies like Star Trek or movies credits at the end of films. I have also noticed this on other high contrast LED TVs. What sold me on the XVT553SV was the picture quality. The blacks are inky black (10,000,000 to 1) and the brightness of the screen can drive you out of the room if you crank the brightness level. But my favorite feature is the matte screen. Because the screen has a matte finish I almost never notice any reflections on the screen. We even have a wall of windows on one side of the room and watch the TV during the day without any issues. My one complaint on picture quality is the blooming effect. When you have a bright object on a dark field the object seems to have a halo of light around it. Does anyone know if any of the newer models have dramatically improved local dimming density. I think to improve this the local dimming areas need to be shrunk considerably. The specs for the XVT553SV say it has 120 dimming zones. I'm thinking 10 to 20 times that number of zones would not be over kill. I would think this would increase cost tremendously. Maybe there are other technologies that could solve this issue beside increasing zone density? Plasma HDTVs seem to have the best picture as far motion and color in my opinion (and blooming effects for that matter too). But the reflection from their glossy screens annoy me to no end. That or the coating they use to reduce reflection drops the brightness and contrast to unacceptable levels in my opinion. Don't get me wrong the Vizio XVT553SV has a really nice picture, but I'm looking for my next HDTV. The OLED TVs are still way too expensive for my taste but maybe that will be the answer in a couple of years.