Pros: So far so good. Only a small bit quicker than my WD Scorpio Black 320GB 7200rpm, but quieter and much cooler. Was recognized instantly because my notebook is 3.0GB/S CAPABLE, unlike many MacBooks. (Disk can be configured to 1.5Gb/s though, for you Mac fans)

Cons: None Yet

Overall Review: To all the MacBook users out there that claimed this disk was DOA, do a little homework and realize that this disk comes pre-configured to 3.0Gb/s, which will not work in many MacBooks and Pros because they only support 1.5Gb/s SATA. TIP: Download the Hitachi Feature Tool (boot time program) in order to configure the disk to 1.5Gb/s. You can also disable the stupid power savings which kinda slows it down (because it idles to quickly).