Just to throw another option in there, here's a 73in Mitsubishi DLP for $1300.
As for Sony, they are supposed to make quality products. But I just wonder if they're really that much better. When I first looked at HDTVs 3.5 years ago, I remember seeing the Bravias in the stores and wondering why they were usually 1.5 to 2 times the price of some lower priced brands like Vizio. They didn't look any better to me.