Anyone had any luck with Vertex 4 drives? My 128 GB version lasted 15 days before it just left the building while my machine was running at idle, shut down by itself and never booted again, no drive recognized in BIOS. I had used only 15% of the drive, just running Windows 7 64bit and a few programs. Luckily I had purchased it locally and was able to return it under their 30 day return policy. While there, I chatted with one of the sales staff about which brands and models were being returned a lot, and he admitted that a lot of Vertex 4's were being returned in the first 30 days with the same problem. He also said that Vertex 3's had the same problem a year ago, but were now okay. We talked about speed vs reliability and he even knew the names of the different controllers and their associated problems. So when he said that he couldn't remember ANY Crucial M4 drives being returned, I said "I'll take it!" - so far so good. The speeds are not as high as the Vertex 4, esp. the write speed, but it still feels fast, and more importantly, it just feels more stable, consistent, and predictable, even at a 4.4 GHz overclock. The OCZ drive never felt the same twice running and you couldn't ever predict how fast it was going to work. Hopefully this Crucial drive will last a long time - I get tired of reloading Windows and everything else every 2 weeks!