Google Chrome, Firefox 3 and IE 8 are the 3 most popular Internet browsers today. Each has their own good and bad. According to techradar, Google Chrome is best in terms of usability and performance, while Firefox 3 and IE 8 excels in expandability and keeping user's privacy respectively.
Check out the following videos that compare the performance of all 3 browsers by recording the time used by each browser to open Myspace, Youtube, and Facebook.
Different from TechRadar, the videos are suggesting that Firefox is the fastest among all three followed by Google Chrome and IE. While I have tried both Google Chrome and Firefox before, I couldn't really tell the speed difference between the two. So my personal favorite browser is still Firefox because of its expandability. Check out this list of top firefox extensions and you will know why I love Firefox so much. Also, some people dislike Google Chrome due to its default setting that will auto send the usage statistic to Google. Check out this article: Why Not Google Chrome?
Oh, and if you decided to go with Firefox, here's a little useful Firefox tips that show you how to setup multiple home pages in Firefox!