I know people who have bought them and had no problems. And I looked at them recently while shopping for new phones. I decided against them because the warranty only lasted 90 days. Seeing as the phone had a previous problem, I didn't feel comfortable spending the money on something that wasn't going to be protected for more than a few months.
Since my husband and I both needed new phones I found a deal where I could buy one phone and get a second phone for free. I got a top of the line phone and my husband got a mid grade one. It works for us because my husband uses his phone for primary talking and texting. I use more apps and take more pictures.