safari... hmmm. since i have pretty much all macs it is automatically on my comps

but i think i like firefox better. speed, and the wide amount of add-ons and themes does it for me

i feel weird surfing the internet if i don't have greasemonkey, firebug, or quickproxy by my side
plus, firefox is used by many more people and therefore a lot more webpages are built around it. i find several webpages that act oddly when using safari.
google chrome is a terrible browser, not performance-wise but in security. it sucks out your info like a vacuum.
and don't even get me started on IE