Phase shifter seems to be the one effect I return to the most. It's been a while since I've used an actual Phaser pedal because the Peavey Mace VT tube amp I always have within arms length sitting on a Peavey 215D cab has it built in. I also own the 4 button footswitch for the Mace VT head so I can also combine the normal and effect channels for more interesting results.