I prefer to use Chrome for its speed and auto google search right from the address bar (not to mention that it spell checks). I have used FF and Safari before. I still use Safari on my Desktop computer (isn't supported in Ubuntu 10.10 ((linux OS)), which is my laptop's OS).
At school, they only allow the use of IE 6. And since they wont allow Ethernet to be used in my laptop, that is the only one used for 35 hours a week.
i use internet explorer with firefox as a backup. chrome is good and often faster than internet explorer. safari is just another one of apples worthless products