This is a very thorough review of all the main browers. Firefox, Chrome, MS Internet Explorer, Safari, and Opera.
They break their speed tests down incredibly far. If you are having problems with any speed related issues with any of your browsers, this will likely tell you why.
The ONLY problem I found with it was that they were using pretty high end systems to test with and they didn’t seem to address the use of plugins.
I know that my own installation of Firefox loads way slower than theirs does. WAY SLOWER!! I still like it and use it as my #1 browser, but it is starting to look like Chrome may be the better browser. I will certainly start playing around with it.