With that budget - can you squeeze in a 50in? Both space wise and the few extra $$$.
The Pioneer 50in and the newly announced (and I heard from some fish lady - possible shipping soon

) Panasonic 50in will be pretty impressive for your needs.
That said - recently purchased Panny 6UY 42in and LOVE it. Would have been happy with the Pioneer I'm sure as well (43in). These are well below your price range and would allow you a few more goodies

Both are highly regarded on the forum. The panny comes in a few flavors ED - consumer and commerical, HD (just now shipping) in the same. Pioneer has two major flavors - commercial and consumer. With the commercial being the favored one.
Fujitsu has an awesome picture, and would stretch your budget for the 42in. IMHO - before I spent that much on a 42in, I would get the 50in in the above flavors.. The picture just wasn't worth an extra 2K to me.
AKAI(Samsung 4235 - found at Costco) can be had for 3K or so, has tuner, speakers and stand that it appears you do not need - as do the consumer models mentioned above. So for your needs you may be better off getting the commerical models, saving a few bucks and gaining a feature or two.
There are obvioulsy many other models out there. These come to mind as they are discussed often here and tend to have great PQ and are considered a value for the $$.
Therese