Originally Posted by doublemazaa
I would love to go up to 50" but this is the only room on our place besides the bedroom and we would rather not have the room lorded over by a TV. It was already a bit of a job to convince the lady that 42" wouldn't be too large. Sometime soon we'll be in a bigger place with a man cave with space for a bigger set and I can get a sunburn from sitting in front of it.
Principle problem you are likely to face is that the Better Plasma panels simply no longer come in sizes below 50".
Would expect any of the Panasonics, from the ST50 Series & UP, to work rather well in your room. Their louvered filter does a nice job of rejecting overhead light, and the sets seem capable of maintaining adequate PQ in a well lit room - but they only come in 50" or larger (and 55" is the smallest VT50).
The top 2 or 3 Samsung plasma model lines should also work fine.
If you have Sun / Very Bright Daylight falling directly on your screen, any panel will struggle - although something with a Matte Finish ought to have an advantage. Alas, the only Matte Finish Plasma - to the best of my knowledge - is the top 2012 LG line. Furthermore, MOST LCD panels are also no longer "Matte" screens, and thus will be just a prone to reflections as plasma panels will. (CNET has kept a running - that is, periodically updated - article on Matte Finish HDTVs, so you might take a peek at their web site).
And certainly agree with the recommendations to look at sets that are At Least 50". Prices on some of these are quite reasonable, the smaller bezels on modern sets make them appear less "bulky," and you will almost certainly enjoy a superior PQ under almost all viewing conditions.
Best of luck with your shopping!