How to choose a best Hard drive? Top 5 Hdd list?

The market is saturated with portable external hard drives(HDD). While all will adequately store and transfer data, there are important differences in design, performance and features that differentiate the superior mobile drives from the mediocre ones. & choosing a top ten among these many hardrives is not that easy as it looks but if we consider these four features as follows you can be able to pick any one which is among top 10 or top 5 & the Top 3

Performance
Performance entails the transfer speed and storage capacity of each drive – mostly the specifications that determine the overall capability and operation of the drive. Transfer speed which refers to the rate at which data is transferred to and from the drive i.e Mbps & Gbps. While comparable drives have similar (maximum) transfer speeds, actual transfer speed can often fluctuate, depending on the size of the files being transferred. Storage capacity refers to the maximum amount of data (expressed in gigabytes) the drive can hold. Mostly We focused on models with a storage capacity of 500GB; however, most of the products  are available in different storage capacities starting from 120GB to 640GB.

Design
The physical design of a pocket-sized drive is just as important as its storage space and transfer speed. Built for portability and convenience, portable drives should be durable yet compact and lightweight. As such, we assessed the weight, dimensions and casing material of each drive in our lineup. Additionally, we looked for bus-powered drives, meaning they are powered through the same cable that provides data transfer and do not require a supplementary power supply

Another important factor that falls under design is the interface connectivity of each USB hard drive. Interface connectivity is defined as the method or specification used to establish communication between devices and a computer. Most drives have a USB (2.0 or 3.0) interface and connect to a computer via USB cable. Other less common interfaces include FireWire and eSATA.

  

Features
While performance and design may be the top priorities, available features are still something to consider. Perhaps most important are any security features the drive boasts; mobile drives are inherently more susceptible to theft and being lost than desktop external drives. Subsequently, we sought portable drives with data encryption and password protection. We also looked for any additional features that enhance the usability of a drive, including backup software, drop protection and plug-and-play operation.

& most important one is the

Help & Support
The best external hard drives are those that come with beneficial, comprehensive help and support options offered by the manufacturer. Most important is the warranty on each drive; a lengthy warranty (two years or more) that protects against manufacturing defects is ideal. Additionally, we looked for what type of troubleshooting support and customer service options were available through the manufacturer's website.

The search for the right USB hard drive isn't easy, but our side-by-side comparison and exhaustive reviews can help make the buying process a little easier.

So here is list of top 5 hdd which we reviewed & listed here for you

1)My Passport Essential(Western Digital)
500GB storage capacity ,transfer speed about 5Gps,USB 3.0 ,&works on all operating systems(recycled plastic)

2)Clickfree C2N 

500GB storage capacity,,transfer speed about 480Mbps,USB 2.0,&works on all operating systems(Plastic casing)

3) StoreJet 25M3(Transcend)

  500GB storage capacity ,transfer speed about 5Gps,USB 3.0 ,&works on all operating systems(Rubber casing)

4)eGo Portable Hard Drive SuperSpeed USB 3.0 (Wipro)

500GB storage capacity ,transfer speed about 5Gps,USB 3.0 ,&works on all operating systems(Aluminum casing)

 5)Rikiki USB 3.0(LaCie)

  500GB storage capacity ,transfer speed about 5Gps,USB 3.0 ,&works on all operating systems (Aluminum casing)