stick with ff.
safari seem fast at first but the speed will drop way way lower later.
i test it all on my machine, opera come first then ff next ie and safari come last. yes, overall even ie faster than safari.
the speed you see at first in safari are fake.
just like anything in mac.
I found that many time I transfers files in Mac, the transferring progress bar often show that it done, but you still can not remove the media, you have to wait a bit more.
It never happen in pc, if it said it done, it done. I can remove my USB drive immediately and no error icon will ever pop up