I have had the Re 20 for about a month. I love this pedal!! It works for guitar, Mellotrons and synthesizers.It is laid out like a mini re201. I was just playing with it tonight with my guitar, my mellotrons and lastly my Macbeth M5. You can really dial in a great echo with all the parameters and it has a new twist effect. This basically is the echoes increasing in speed and timber. Think Steve Miller at the beginning of Fly like an eagle when the effect speeds up in tempo and frequency as well. For US$ 249 you can't go wrong. Really sounds sweet with mellotrons as you can dial in the delay you want for that accurate echo/repeat rate and intensity.
Stores cannot keep them in stock. If you seriously interested go to Harmony Central and read the user reviews. The reverb section of the Re 20 I don't use as I have an old Premier 90 tube tank that sounds fantastic!!
Jimmy Moore