To exchange files with colleagues and friends, I bought the portable drive Lacie Rugged 500GB I am very happy with the quality and speed of data transmission. This record is really much better than hard drives the previous generation as regards these parameters. At the same time, it is silent, does not overheat and the system does not crash. It is very easy to master. Too bad his kit does not include bag for the disc, but the casing is really solid and needs can not be bag.