My suggestion would be to get a 52"... Samsung.... unless you don't have room on your wall for it. :^)
A couple of years ago when I was looking for our 1st HD TV I saw much mention of SD (standard definition) vs HD (Hi Def) quality in HD TVs
The point then was that a lot of TV watching was still likely to be in SD for a number of years. Every store shows HD demos and looking at a major investment I found that Sears (strangely enough) was the ONLY place that was set up to show a fair number of HDTVs with both SD and HD reception.
Based on both SD & HD I went with a 40" Sony Bravia - any bigger wouldn't fit our Entertainment Center.
The Sony was clearly superior in SD rendition - still happy after 2 years. Comments re SD of your HDTVs?