Should I use USB or Firewire Drive on my Mac?

I bought a 1 TB Maxtor One Touch Hard Drive recently for use on my Mac.  It has both USB and Firewire connectors on it. I always recall the days of ‘Firewire is superior’ especially before USB 2.0.  Now I hear people say there is no difference.

Is that true?  Since this drive had both connectors on I decided to fire up Drive Genius and run a benchmark test.

As you can see, the Firewire connector performed consistently better across all tests.

I ran the firewire test first.  The firewire drive is shown in BLUE in all the tests.  I disconnected the firewire (FW400) cable and connected the same drive with the USB cable, plugged directly into the back of my iMac.

The USB tests are shown in green.