Pros: I have 140GB of usable space now! Works great and this drive seems to be a little "snappier". (300mbs -vs 150mbs from the 120GB drive). Installation is a NO BRAINER! Open the side door, remove one small philips screw, pull handle, slide drive to the right and pull out. Remove caddy (4 screws). Reverse process to install the new drive. When you boot the PS3 it will ask to format for you. DONE!

Cons: None, I was expecting perhaps a little more heat or noise but this is not the case.

Overall Review: It costs more than the 120GB version (MK1234GSX) but it has twice the rated throughput and seems faster then the stock drive. (In this case mine was a 60GB)

Pros: Cheap

Cons: Extreme poor quality! They couldn't even run a spell check on the user guide. I'm not a grammar hound! No bass response. My kids didn't want them. Power cord super heats when charging.

Overall Review: Stay away. I feel I got cheated.