Why should I pick either of those two over firefox when using osx? They don't seem to use extensions and they seemed very dumb when I tried to use them.
Camino uses the Mac-native Cocoa APIs as opposed to the non-native Gecko engine found in Firefox. Safari is very limited, almost minimalistic in its approach from what I've used, but is tied into OSX well, so if you need cross-usage like in iCal, then I would stick with Safari.
Firefox 3 for the Mac will be written Cocoa.
Safari is more integrated into the OS. Like how it auto-mounts and opens .dmg's when you download them.
Safari uses a different HTML engine than Firefox. Some sites that look wrong in Firefox may look different / better in Safari, and vice versa.
Safari has no tab browsing!
Yes it does.
Not on my laptop it doesn't!
Then your laptop sucks!
Check under Safari > Preferences. It's not turned on by default.
No, my laptop is very beautiful and great... except you know, it burns my flesh if I put it in direct contact with my skin.
That's why they're called notebooks and not laptops.