I own two of the "grey" PNY Turbo USB 3.0 256GB drives, one's still in the package. I don't think that I own any of the 128GB, although I might have bought one once.
The ones I have (the 256GB), came pre-formatted FAT32, and they are SLOW. Like, 15MB/sec write speeds, in a USB3.0 port.
I've heard that if you re-format them to NTFS, they run quite a bit faster. I'll have to try that with the other one.
These appear "white", so perhaps they are a newer version. I don't know what the speeds are on the white ones.