I used eSata before I added the USB3 controller and disk dock - it only seemed to be about 10% faster than USB2.
I guess you can't add USB3 to a laptop. I'm thinking my next workstation build won't have any spinning drives, just one of
these and a 2 slot USB 3 disk dock. USB3 controllers and docks don't cost too much, but the WD caviar blacks ain't real cheap.