Pros: Great drive for $110 at the time of purchase (2.12.2010) Noticeably faster than previous my Hitachi 250GB 5400RPM Drive Extremely quick application launch, renders 30GB iTunes library noticeably quicker than 5400RPM Drive Games render faster and smoother Wake up speed have decreased Installation of 10.6 Snow Leopard was 30minutes (45 Minutes on 250GB 5400RPM) Installation of Drive, OS and Restoration of Time Machine Backups = 2 Hours

Cons: Uses more power than 5400RPM Drive Slightly louder than older drive

Overall Review: Current Configuration: Macbook Pro 13 2.53 4GB 10.6.2 Snow Leopard Great drive for those who need a lot of storage! Considering getting an additional one or an SSD and an optibay for a total of 1TB of storage or using the SSD to boot from and the other drive for storage in the Macbook Pro