I just got a Proton and I have no need for 2 filters. I like the GR very much, but the Proton also sounds awesome and takes less space on my PT Mini.
So, up for grabs is a first version Groove Regulator.
Here it is on my board : 160$ shipped to Canada/USA.
Analogman Chorus (+ cash on my end)
Boss OC-2 (+ cash on your end)
Darkglass B3K (+ cash on my end)
Dr. Scientist The Elements