My 64GB PNY HOOK ATTACHE not create the specified 50 MB / s, but according H2testw 32 MB / s write speed, what an upgrade to the 10-15 MB / s of normal USB 2.0 is quite stickst. Reading speed is fabulous 93 MB / s.
The construction is extremely stable and very visually appealing. I am an absolute fan, the design I would change nothing. In the future, may like a faster USB 3.1 chip in and more memory, but otherwise the stick is perfect.