I'm debating this decision right now. I have a samsung 51" and have really bad glare issues with it in my living room. Covering the huge window is not really an option so it seems the ST is a better choice. My only concern is the filter on the ST50. Does it, in any way, change the picture quality (brightness, clarity, etc) compared to the UT50? I loved my P50ST30 that I had and the picture was outstanding and did not have issues with glare on that tv.