I've had a Red Witch Moon Phaser for a few years and always used it to get a rotary speaker type tone with it set to the 'tremophase' setting. It does a good simulation - as far as my ears can tell. However, I recently went back to listening to some early Richard Thompson songs and he seemed to use some phaser sounds particularly on rhythm guitar parts. So I started fiddling with the settings on the pedal and focussed on the 3 different phaser settings and have found some really useable phase settings that seem to work well both for rhythm and lead work. It can really add something to rhythm sounds when used sparingly. Anyone else use their phasers much??