Experience of using different browsers

Internet explorer: 

This is the first browser that I used and it is usually for the windows system. The speed is not that fast and it got frozen sometimes. 

Safari:

This is the one that I'm using now since I bought a Macbook Air. Its speed is faster than IE. The tool bar is concise and easy to use.  But sometimes it quits for no reason.

Chrome: 

It is similar to Safari. Fast speed, easy to use. Also, there are some softwares that can only be installed for Chrome, such as "Unblock Youku" (which is a software only for Chrome used for unblocking some websites). 

Firefox:

Slower than Safari and Chrome (but I'm not sure if it is because I use it on Mac).