Bigbruin.com tried the PNY Turbo 64GB USB 3.0 Flash Drive
A quote from the article:
Just before releasing this review the drive stopped working. It shows up in Windows 7 as an unrecognizable device, and when you try to initialize it, it shows up with a 0GB capacity. This drive was used for benchmarking and once to transfer files, so basically on its third use in just about 2 weeks of ownership it has failed. Looking more closely at reviews from Amazon.com and other places finds more people reporting the same type of rapid, complete failure. Returning it would incur a 15% restocking fee (since I threw out the packaging - which you basically have to destroy to open), and I am now waiting on RMA info from PNY. The following is how the review read prior to the failure, with additional notes added to the conclusion...PNY Turbo 64GB USB 3.0 Flash Drive Review @ Bigbruin.com