External storage devices, no doubt, are becoming instrumental for saving important data and taking backups. Here we have compared and tested different hard disk drives, to help you choose the best one. If we look at the portability and weight then Kingston Digital-HyperX is the lightest of them all and Transcend Store Jet 25H2 being the heaviest of the slot. If you look at the performance, the Kingston Digital- HyperX SSD took 7:42 minutes to transfer the data but access time is the least. So if you are looking for a SSD, then you can opt for it. However, the price which is Rs.15,500 for 120 GB can be an issue. In terms of performance and features, Transcend Store Jet 25H2 scored highest in the performance test (for USB 2.0) and took just 5:58 minutes to transfer 10 GB of data. Apart from being just an external drive, it offers different tools also. It has a tool to back up your bookmarks. It also lets you encrypt the hard drive and also has the tool to backup and restore the data. The only two negatives are absence of USB 3.0 and the weight (256 gms). It costs Rs. 6,250. If you want USB 3.0, then you can go for Freecom- TOUGH DRIVE 3.0 1Tb. Now if you are an Apple fan then Freecom also has hard drive specifically for you --Freecom Mobile Drive (500 GB), which runs only on Mac.