Bought two of the drives and am very, very pleased. I compiled a shedload of VHS tapes into a drawer full of DVD discs, then later recompiled these onto Seagate 1.5TB hard drives in "raw data" and "compilation for playing" formats. We can watch the compilations on the TV through cheap Nboxes from Ebay shops, or (better and more recently) ViewSonic VMP73 / VMP74 which support more file formats than the Nboxes.
Most of the Seagates (we have 10) developed the notorious "click of death". Whilst none has failed so far, they often became extremely slow to the point where the Nbox gave up trying to access the data and reverted to its "home page".
I chose the Samsungs to replace the "compilations for playing" through reading reviews, only one disappointed user who seems to have bought a duff one. They do not have the Seagate clicking/stalling problem, and we watch something several times a week. I have all the movies on one drive, the second is a backup kept in the garage and taken with us when caravanning so we can watch it through a similar setup when we are away. The Seagates now hold the "raw data", at least 2 copies of each, should we ever need this to recompile anything.
Overall superb products that seem to be perfectly reliable. Oh, and the Samsung and Seagate PSU's are compatible (12 volts DC 2 amps stabilised to power jacks) so we can swap the drives around between TV and PC stations!