The Mach Xtreme MX-ES drive may not look like much. In fact, it looks so simple that you may easily mistake it for a cheap drive from some unknown manufacturer, which is too bad since the drive really packs a punch because of its included SLC flash memory. The drive is, even with SLC memory, not too expensive, especially because it offers an excellent average of 130 MB/s write and a still impressive average of 160 MB/s read. The MX-EX is, while neither of these numbers are as high as the advertised ones, still one of the fastest sticks we have tested in terms of read performance, and it flat out beats the competition by miles when being written to. Mach Xtreme may not have a clue about keeping a company image through proper, uniform housing and branding of products, but the MX-ES is still, even if Mach Xtreme is being overly optimistic with their advertised performance, one of the quickest drives we have tested to date.