I just bought the TH-50PZ80U myself, coincidentally from my local Sears.
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I can tell you... there is a reason I chose this model, I think it's one of the best price for quality items on the market right now, and 50" looks a lot bigger in your living room than it does on the showroom floor, trust me.
![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
I think you'd be happy with it.
As for the stand - likewise, I had to move out the old entertainment center and put something nice in for the new TV to rest on. Here is where I fudged a bit, and headed down to Big Lots and picked up a nice tempered glass top stand with plenty of space for my SCS-01 Center Channel and what equipment I have, and paid $140 for it. I came in under my $2K budget, and thrilled the wife while I was at it; even she thinks it looks wonderful in the living room.
If I were you, I'd choose a quality TV over blowing your budget trying to get a nice stand - get the nice TV, then it's always easier to upgrade the furniture and non-electronic parts of your setup later on, at much less strain on your wallet.
![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)