Most of the time, I do not mess around with Beta anything. But I got a wild hair to try IE9, so I thought that I would try FF 4 too.
Man, FF4 really loads far. It does not get to a sight any faster, but once it hits its target, it displays a busy page very fast.
I have both an ATT page (yahoo) and iGoogle. Both I have a lot of contest. It was not really sure fast before. Well Chrome was OK, until I added some of the extentions. Then it slowed down a little. BUt was still haster the IE.
And it also gives you a little more control over the brower activites.
But, I am making the change over to Linux, to I know that this will all change.