Firstly - Can anyone tell me the main differences.
Secondly - Can anyone recommend me a decent pedal for either?
EDIT: One that could also be connected to an expression pedal too.

One more thing - can the expression pedal on the Zoom G1X be assigned to different FX? For example if I wanted to use the expression pedal as a pitch shifter, would it let me do that?

Last edited by Stan_da_man at Sep 11, 2007,
Pitch shifter changes the pitch. A phase shifter puts the sound in and out of phase. This means it passes it through a filter that modulates the peaks and troughs in a wave. If you don't know what peaks and troughs are, go back to 9th grade science.
A good phase pedal is the EHX Small Stone, another is the MXR Phase 90.