In the past few years, we have seen a proliferation in number of data transfer interface technologies. Users buying new external hard drives and other portable electronic devices face a problem of plenty with USB 3.0, eSATA, FireWire and now Apple's Thunderbolt making an entry into the market. With each offering data transfer speeds in multiples of gigabytes per second (Gbps), the average user may find it highly confusing to make a choice. Through this Buzzle article, I am going to make the c...