The new pedal that has the most complex sound for me is the newer Digitech Multichorus. If you liked the vintage Roland Chorus Ensemble tone or the old Ibanez CS-9 tone, you'll love the MultiChorus.
I can nail the old Andy Summers Police sound with this pedal.
The more you crank the X-Series Voice knob, the more overtones that you hear in the Chorus. It's a neat pedal.