In my line of work these portable external hard drives are a must have. This is my third hard-drive in the space of 15months.And to be honest they all work pretty much the same.
I bought a WD 250gb and that is going strong - only problem is that the casing is showing signs of wear and tear after 15months, not the best build but does the job.
I bought the Seagate Go 500GB middle of last year - fantastic product very sleek and slim, its longer then the Samsung but a lot slimmer.Again I have had no problems with it.
I purchased the Samsung 1tb (actually about 930GB) last week and again it works just like the rest. It comes with a handy (leather?) pouch and is very quiet and does not over heat (to be honest I have not had a problem with over heating with any of the aforementioned drives.)
I purchased this as it works out the best price per GB and I am not disappointed. All three drives transfer at a rate of 1gb per 60seconds (give or take).
With advances in technology I expect to get a 2tb drive next year for the same price.