Both of my OCZ Vertex 2 died on me. I was able to bring one back from the dead with firmware upgrade and repartitioning and reformatting. Second one serves as interesting although bit thick coaster. Couldn't return them to manufacturer because they were not bought from one of their listed retailers. I couldn't return them to the shop either because they worked few years before any trouble happened.
I was lucky I got RMA and got a replacement. I sold the replacement on ebay once I got it and ever since I couldn't trust another SSD myself. Though I am still very happy with the SSD that comes with my Macbook Pro 15"