Check out this site:
http://www.japantackle.com/Daiwa_ree...iga_z_spin.htm
I asked about this EXP model and the guy who runs this site out of Japan informed me via email that the only difference from the regular 6000 (for an additional $75) is the color and the round knob. It also holds a little more line. They also sell an EXP with a 4.3:1 gear ratio.
Nice looking though.