Did some daytime viewing today with my 55UT50. Got the full effect of how reflective the screen is. At times it was annoying depending on where I was sitting in my family room and what was on the screen. Most times though it was not distracting at all. With the set off this is a big, black mirror of any light shining on it. At night it's awesome!
My room has 2 large windows to he left of the TV about 12-15ft away. There is a bay window with 3 windows about 25-27ft directly across from the TV. The sun was not shining in directly any of these windows as these were taken about 2pm and the sun was over the house. I had the blinds fully open to get as much light in the room as possible.
Here are some photos showing the reflectiveness. You can make out the variation in brick color on my neighbors house on one of them. Click thumbs to get larger sizes.

I'd really like to see an ST/GT in my house to see how the filter performs and changes the PQ. When I looked at an ST in BB, I could still see reflections of the overhead lights about the same as in the UT. Since the ST and UT were not on the same wall, or same height even, I could not fully judge the effectiveness of the filter vs no filter. But I still felt the UT would be more to my liking in my house which is why I chose it over the ST/GT not to mention the cost savings.
We got our Dish upgraded to HD this morning so finally getting some time with HD content. I haven't cal'd the set yet but so far the PQ is really nice and a big step up from our 32" CRT.
Couple things we're learning about HDTV:
- We are having to get accustomed to constantly changing the aspect ratio depending on the aspect ratio of the program we're watching. I have the TV set to FULL. Thankfully, our Dish 722k is easy to cycle through the options with the * button.
- With HDMI, or maybe HD signal in general, the "CC on Mute" feature does not work like it did on our SD CRT. Have to go into the DVR menu to turn on CC if we want it on when muting the TV. I've read this has been a long standing issue so seems unlikely the players involved - TV mfg, receiver mfg, and content providers - are interested in solving it.