If you haven't already I'd look at CNET for comprehensive reviews of the TVs you are looking at. I have seen one of the versions of 52" Sony Bravia XBRs in a room with a lot of windows and I was really impressed with the lack of reflection from the screen surface during the day. Nothing like my Pioneer plasma in that regard.
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AvFan
Outlaw 976 | ATI 2005 | M&K 850s Left, Center & Right, Surround-55s, MX-70B Sub | Harmony 950 remote | Panamax 5100 | OPPO UDP-203 | LG OLED55B7