As with the other reviews I purchased this drive for my PS3, although I did buy it elsewhere and a while ago.
It's a brilliant drive, WD are to be commended, I have a WD passport drive (40GB) and that has worked superbly since day one.
The WD drives are only slightly louder than the Samsung Spinpoint drives, which as they are industry leading is no mean feat.
Like the other review said, swapping the PS3 hdd is a breeze, just remember to backup your important stuff (game saves) etc. If you have an external USB hdd formatted in FAT32, you can use the PS3s built in backup utility.
Swap the drives (mind those screws and get the correct size screwdriver) then restore from your backup, easy-peasy.
I'll only replace this drive when WD produce a 500GB unit for under £100.