My lower model panasonic 46 x3 plasma has no anti glare filter and I have windows on the opposite wall. It is basically unwatchable during the day- but it's for nighttime bedroom 99% of the time so it works out. I have huge reflections of the windows behind me on this tv

I have large 7 foot windows to the left of my 65vt30, but no windows directly on opposite wall. The vt30 has an excellent light filter for the most part. I have zero issue watching this tv during the day, and it is plenty bright.

-David