Disk Storage

All hosting plans come with a different amount of disk storage space. If you are with a web host and thinking of switching to another provider, then you should be able to find out the amount of space needed by adding up all file sizes of all your websites. If you are not, then just for estimation purposes, a typical page of a web site is 30KB and a typical email message is 3KB.
Many web hosts do allow you to go over your disk storage, but if your average usage for a month is over your set limit, you would be charged an additional fee. A few web hosts contact their clients if they are about to run out of the disk space allocated and offer to upgrade their hosting plans.
Bandwidth

Every visit to your website, or a file download from it, uses a little bit of transfer bandwidth. Although it is difficult to calculate the bandwidth required, 98% of web accounts use less than 2000GB monthly. Therefore 3000GB and higher is a good bandwidth. If you get less than 2000GB you may end up paying extra for additional bandwidth.

Domain Registration

You can register your domain name via your web hosts. Although it is not the cheapest solution, it is generally a lot simpler.
Many web hosts include one free domain registration either for a year or for the life of the hosting plan.

Money-back Guarantee

Most web hosts are required by consumer law to give your money back within 14 days of the purchase. However it has become common for the hosts to give money back within 30 days. Many web hosts on our top ten chart guarantee 60+ day periods. However if you have taken advantage of free domain registration service then your host will probably not refund the domain registration fee. However you would remain the owner of that domain name.

Free Setup

Setup fee is the most favourite hidden fee among web hosts. The setup fee is usually waived if you choose to pre-pay for 12 months in advance.

Control Panel

One of the best administration control panels in the industry is cPanel. It is also the choice of the majority of webmasters worldwide.

Free Site Statistics Programs

Site Stats allow to analyze the traffic that comes to your website from different sources such as paid-for and organic search results, referrals etc. In our opinion, the most popular site stats programs are Webelizer and Awstats that track the traffic to your page by keyword, IP address and referring URL.

Free Spam Filtering Programs

The most popular spam filters are powered by SpamAssassin, that helps to reduce the amount of junk email received.

Technical Support

Many hosting companies claim to offer technical support 24/7/365 by chat, phone, email, and ticket system but not many are willing to prove it. Most web hosts on our top ten chart have Knowledge Base that has answers to just about any technical question a customer may have. We do regularly test the technical support of web hosts under review, as we never rely on what they actually claim on their websites.
Also, it is very frustrating to talk to somebody on the phone who doesn't even understand the problem. That is why, dedicated & experienced support is what we look for.

Other bits to consider:

Uptime Guarantee

It is defined as being the time that server is in service and operating. Most web hosts offer 99.9% uptime guarantee.

Type of servers your account will be hosted on

Linux, an open source operating system, is the most popular

Email Addresses, Email Lists & Autoresponders

The more, the better. Most web hosts on our top ten chart have no restrictions.

MySQL Databases

MySQL is an open source relational database management system that uses Structured Query Language (SQL), the most popular language for adding, accessing, and processing data in a database.