I purchased seagate slim portable 500gb external hard drive it has a slim design which looks nice on it.But it has a demerit that it cant bear shock even a littile bit .I lost my all data when it fell nearly from 2 and half inches on coushion and after that when I connected it to my pc I heard a craking noise coming from inside and it completely stopped working.the hard disk performs well at the beggining but its not durable as it gets older .