I use only Mozilla Firefox, is very fast, safe, cusomizable, easy to navigate, has good extensions, themes, etc.
Mozilla Firefox for smart guyz
I don't use IE, works slow, bug... bleah
Lets you display more than one site in a window using multiple tabs. You can open a new tab by selecting Navigator Tab from the New submenu of the File menu (or press Ctrl+T). You can also open a link in a new tab by using the right-click menu. You will find configuration options in the Tabbed Browsing preferences panel.
Note that CrazyBrowser is a different product than IE.
2. Popup blocking
Block all those popup ads. To disable popup windows, select Advanced and then Scripts & Plugins from the Preferences window. Then uncheck the box that reads "Open unrequested windows".
3.Prevent scripts from doing various things
You can prevent scripts from moving windows, closing them, changing the status bar and setting cookies. To change these settings, select Advanced and then Scripts & Plugins from the Preferences window. Then uncheck the desired boxes.
4.Site Navigation toolbar
Displays content from the <link> tags provided by a document, allowing one to navigate to various parts of a site.
5. Sidebar
The sidebar provides a number of tabs by default, and others can be added by the user.
6. Can add custom panels to sidebar
Custom sidebars can be implemented in HTML or XUL and can be installed from a remote site without much hassle. Sites can add sidebars using the window.sidebar.addPanel() function.
7.More control over text zooming
Can zoom text to any size. IE only supports five sizes and has no keyboard shortcut that I could determine. For sites that use fairly small fonts, having more larger sizes in necessary for those without perfect vision.
Note that using the mouse isn't a keyboard shortcut.
8. Can zoom any text, even that with fixed pixel sizes
Can zoom text no matter what units were specified, an often cited issue with IE.
9. Can select from multiple stylesheets provided by page
When a page provides multiple (or alternate) stylesheets, one can select between them by choosing from the Use Style sub-menu in the View menu.
10. Page info dialog
Provides additional information about encoding, MIME type, referrer and meta tags. Some of this information is also available in IE's properties dialog although it isn't as detailed and the window isn't resizable.