I currenly use Chrome. Lean and mean. Not a big Google fan, but Chrome works well on older hardware, and on newer hardware it is still much faster than IE.
I am not a fanboi or a hater of any company or any browser, so I am just looking for _results_. I'll take a look at IE9 when it comes out fully later, and will consider changing to it if it works well.
I use Firefox for most of my non-FR browsing.
I like it. I like the add-ons. But, as you say, it becomes bloated.
And, it still has a memory leak that has persisted since around version 0.7. The Firefox folk claim it must be caused by add-ons. But the leak occurs even without any add-ons. The 3.5.4 isn’t quite as bad as older versions, but the leak is still there. I had the older versions consume upwards of 750Mb while setting idle; 3.5.4 can consume upwards of 300Mb.
[Right now it is at 293,436k and I don’t have any webpage open.]
I run an add-on called Memory Fox. It helps some, but still, Firefox is a memory eater.