I was having problems with MicroB and was more or less forced to run Firefox for awhile. I was surprised; it didn't seem as slow as it did a week or so ago when I first tried it on my N900. There are some nice add-ons for Firefox that aren't yet available for MicroB. It has a pretty good overall feeling of quality.

In the real world, on my desktop and laptops, I have pretty much switched entirely over to Google Chrome from Firefox for the time being. Opera, though is another great browser out there. I hope we have the choice of all of them in the future on the N900. I will keep switching off to whatever is my current favorite.