This review left some unanswered questions, like what's the difference between Phaser 1 and Phaser 2, or Vintage Chorus 1 and Vintage Chorus 2 and Multi Chorus. So I went through the trouble of digging around on their website to find the manual and locate that info. Here it is:
[Phaser 1] A classic 4-stage phaser. Warm and vintage sounding.
[Phaser 2] A more 'peaky' 8-stage phaser.
[Vintage Chorus 1] A single LFO (Low Frequency Oscillator) vintage style chorus.
[Vintage Chorus 2] Two LFOs combined to give a natural sounding chorus.
[Multi Chorus] This is the most complex sounding of the chorus settings with three LFOs combined with a 120 degree phase difference.