these are your options, as far as i'm concerned:
Safari - it is the default browser for the OS, so it should work the best, right?can't really customize it as much as Firefox, by why would you want to have that many extentions anyway? i have safariStand and Shaft on my Safari and i don't really care for any more customization
Firefox - not much i have to say about firefox, we all know it kicks ass, and you'll have the same interface roughly using it in both platforms, but it just doesn't look as good on the mac as it does on the pc, my humble opinion. extentions are great, but if you go over the top it will be a memory hog.i just use it for pages that don't work well with Safari or for flv downloads and so on...
Camino - pretty cool lightweight browser, i use it the most after Safari, gets the job done and works like a charm
Shiira - shiira looks awesome! it's by far the prettiest browser i've seen so far, but it really lacks in user experience... maybe i haven't used it enough, but i feel that a few key options are missing...
Opera - i had never used it before, but since it's my job, i have to test my websites on as many browsers as i can get my hands on... opera does look pretty fugly on the mac, but i must admit that it also looks very efficient... can't really express an opinion on it since i've practically never used it in a real-world situation
hope that helps
in the end, it's down to personal choice
