don't recall which drive is in mine. it's probably a wd drive, since that's almost all I buy.
btw, if you're going to install an hdd in a phat 360, be careful about the eject spring. it tends to try to go shooting off when you open the hdd caddie. iirc, it's sandwiched between the button and this other piece shaped like a bat (both plastic). I don't know how it is with the slim (if they use some sort of enclosure) as I've never owned nor seen a slim in real life.
btw, if you're going to install an hdd in a phat 360, be careful about the eject spring. it tends to try to go shooting off when you open the hdd caddie. iirc, it's sandwiched between the button and this other piece shaped like a bat (both plastic). I don't know how it is with the slim (if they use some sort of enclosure) as I've never owned nor seen a slim in real life.