My recommendation: to avoid headaches, don't put anything of importance there, or at least have backups all around... mine lasted about two months, most of the time being used read only, and data was later unrecoverable.
Not recently, it was back then just a couple of months after I bought it. I was using it to run some Wii U backups, it was connected 24/7 the Wii U USB port but this shouldn't be reason for it to die... I got a USB HDD for the Wii U after the flashdrive died and the HDD is still working. I still have the receipt in my E-Mail, and it indeed was a "SANDISK Ultra® USB 3.0 Flash-Laufwerk 128 GB".
My recommendation: to avoid headaches, don't put anything of importance there, or at least have backups all around... mine lasted about two months, most of the time being used read only, and data was later unrecoverable.