Looks like there aren't enough negative mentions yet.
Sandisk lists the specs as 200 MB/s Read and 150MB/s Write. And I am happy to report I got 207 MB/s Sequential Read and 160 MB/s Sequential Write in CrystalDiskMark. So this is by far the fastest Write flash drive I have had. This was tested using my USB 3.1 port on my Asus MAXIMUS VIII HERO motherboard. The USB connector retracts very smoothly. I've had other flash drives which can be difficult to open/close. This one is very easy to open and close.
I would recommend this to a friend