BOSS FS-5U FOOTSWITCH - $40 OBO (google map)
This was a great 2-channel footswitch when I was using it. Used for heavy, distorted guitar with occasional clean tone, so I found it easy and convenient. Select the polarity for the pedal, then when you want to switch to your other channel, just press and hold the button. Release your foot from the button to return to your main channel. Comes with a long cable.