Very disappointed in Texas

I bought the Samsung HLT6176 in early October from a local electronics megastore, and have gone through 3 of them already (today is November 24, 2007). The picture quality is great, but the craftsmanship is TERRIBLE. The horizontal lines are not. The first TV was the most apparent in that the entire lower left corner was distorted and bowed. The second had distortion in the lower right corner, and the third was distorted in the upper left and lower right corners, as well as an indelible dark spot in the middle of the screen. The screen is also flimsy and warped. I was offered another exchange, but I said NO...I don't want another one of these disasters. I will be returning this one for hopefully a Mitsubishi product.