I have had three 1TB drives from China. All have went bad and was replaced by drives from Thailand. Friend has also had one from China go bad as well. When you go to buy the 1TB drives, it is hit or miss as to what you get. With that said, I am not sure there is a difference as the 1TB drive from Seagate has been plagued with issues and firmware upgrade required... not found issues in 1.5TB or 2TB.