I ordered a Samsung a few weeks ago from an ebay seller which included the freight guys powering it up to make sure it was working. It worked great while they were here. 10 minutes after they left, I had horizontal lines all over the tv, and a huge black vertical bar on the left side (almost looked the TV was cracked on the inside).
Thankfully, the seller is good. They stepped up and will be refunding me once they receive this. Waiting for freight company to pick up.
My old tv was a Samsung, and I had to replace the DLP chip once, and then had a shadow start showing up on the screen.
I, too, am taking a break from Samsung. Trying Sony this time around.