Last time I searched there weren't any good demos of these pedals. Since Prymaxe has a convenient return policy, I took a chance and bought a Tejas, and luckily I both liked and kept it. But I usually won't buy a pedal without at least a couple informative demos on youtube.
I don't want to overcommit- but if any of those builders are reading this and need someone to do them... you know how to get in touch.
But the more interesting pedals the better. I'm frankly tired of overdrive, fuzz and boost pedals. If it has control voltage and gate inputs... its probably on the right track for being interesting.