Tell me about the Chromatron v. the others.
I've had the Chromatron, Wonderlove (v2) and Micro-Tron III.
I never bonded with the Wonderlove. I can't remember why exactly, but I just remember hating the damn thing.
The Micro-Tron was too quacky for my taste. Also, pancake-styled patch cables wouldn't fit in the pedal and it pissed me off.
The Chromatron was by far my favourite. My only complaint was the size, but even then, it fit perfectly sideways on a Pedaltrain Nano.
Sold the Chromatron because I didn't need it and because someone was willing to pay a lot for it.
Also had the Spectrum. It sounded good, but there were too many cons. The switch was loud and clunky. The desktop app was poopie (although the iOS app was great) and not intuitive. Unless whoever made the patch made a recording, you had to burn the patches onto the pedal to test them. Most patches didn't have descriptions and those that did didn't say much. Unless you went and edited the patches, you couldn't know which knob did what...
My favourite filter is the MF 101. But it also has its share of issues (huge, centre-positive, needs to be in a loop, etc.). I plan to try the Iron Ether next.