Pros: As I would expect, it is fast compared to a standard disk. Does not take long to learn my usage patterns and move my frequent stuff to flash.

Cons: Unstable to the point of causing system crashes and data loss in my early 2009 MacBook Pro. Randomly and frequently (once or twice a week) would appear to hang my system with the spinning beach-ball mouse cursor. No useful logging after a hard reset to help figure out what the problem was. I eventually started leaving terminal open on the desktop so I could poke at the system when it was hung. Turns out the drive was dropping out and the OS was no longer seeing it. Terminal couldn't find simple things like 'ls' or 'cd'. Two weeks ago I finally gave up and switched back to my older 750GB Seagate hybrid. Everything is stable and works beautifully now. Not sure why the 1TB drive is so unstable, but it was a complete waste of time and money for me.

Overall Review: Bought this 1TB hybrid after being very pleased with my 750GB hybrid Seagate. The 750 was fast, stable and really helped my aging MacBook Pro (early 2009) keep up. I was looking for a little more drive space and I needed to replace a failing drive in my Dell laptop. Hoped to use the 1TB in my MacBook and move the 750GB to my Dell. It has been a miserable 6 months trying to debug the problems with my macbook. Took it half apart, checking connectors, blowing out dust, reseating memory, you name it. The problem couldn't possibly be the brand new Seagate drive. I had the earlier model and it was great. Turns out it was the new drive. It is an expensive paper weight now. Gave it one egg because it was fast when it worked.