Firefox is the best, it is totally customizable with the free extensions you can add on to it. You can totally change its appearance with tons of themes. You can add hundreds of extensions to improve its functionality to your liking. Far safer than Explorer, it is by far my favorite. I rarely use Explorer. I have many of the different browsers on my computer. I have used Chrome, Opera, and Avant browsers at various times. They all beat the Microsoft offerings, Firefox is the best by far.
I also use Firefox's companion Thunderbird for my email. It is also totally skinable with tons of themes to change its appearance. It also has many free extensions to improve its functionality. If you fear picking up a virus through emails, Thunderbird is far safer to use than the Microsoft email clients. Most of the exploits are designed for Microsoft's Outlook email program.
Be safe, don't use the Microsoft browser and email programs. They are always full of security holes that Microsoft takes their sweet time about patching.
