Firefox 7.0 is the browser that I am currently using on my N900. Its pretty fast compared to its predecessors. Its not even in BETA and all you can get is the nightly build. For me, its okay, as I like playing with my systems and mobile. If that is okay with you read on….
Head over to the firefox nightly build website Firefox Nightly Builds. Go to the links for the mobile version and then select Maemo build and download it.