Similar journey for me with multiple FIs! I would like to give the v4 a proper go, though, as Peter's latest upgrades taking some ideas from the MXR, in return, do sound good! Particularly if I can get hold of one of the mini version used. The FI is Mohini Dey's fav synth pedal!
(Btw some of us are very grateful for your continued stocking of the BC effects for sale - still loving my GT1000 Core, it's been an excellent upgrade after several years of Zoom B1-4!)