I have a HP Pavilion ZT3017US (ZT3000 series) laptop and the hard drive went out. After some research, I discovered that the Toshiba MK6021GAS hard drive has a pretty bad repetation for reliability and customer satisfaction. I would like to switch to a Fujitsu, Hitachi or Western Digital or Seagate drive, but I am worried about compatability. Are all 2.5" laptop hard drives compatible? I have built numerous desktops where hard drives are interchangable for the most part, but this is my first laptop repair. Does anyone have a harddrive compatability chart or can someone point me in the right direction as to what drives I can choose from? Thanks.