Summary: Bought 3 of these for under $15 and ran CrystalDiskMark on all of them and were getting speeds of 25/5 read write. It takes forever to copy over files. Its a good drive to put an OS on to create a USB boot drive and backing up files. Don't bother putting movies on it because its so slow.
Excerpt: I got 3 of these flash drives for use with my music collection. I play music as a DJ on CDJ's and have used rekordbox to sort and organize my music. They aren't incredibly fast, but they work great and I can't imagine breaking them! They're very sturdy and fit right on a key ring which is great.