I recently bought a Toshiba canvio wired external hard disk. Its price is competitive and varies from time to time.
The external hdd is very portable and gives best performance. And copy of file transfer rate depends upon PC hardware or capacity. in normal basic desktop copy speed is 22-35 MB/sec( also depends on file type). And in average gaming laptop it is 35-56mb/sec.
Its build quality color and size is comfortable and portable for daily carry and usage.It has a square shape and fits in pocket.Their service will be good(not know/sure). It is very economical as it is the best cheapest Drive.