I did get myself a big variety bag of different jazz 3s a while back; they’re all the same shape but in different plastics. In Ultex, I have a yellow clear one and a few of the shiny black Petrucci picks. The Petrucci in particular seems to stay “smoother” along the edge and resists wear from the strings, compared to the red nylons. Even the red ones do feel stiffer than most nylon picks, for sure—which I assume is because of the thickness and shape.
Those JB picks look pretty interesting! I’ll have to see if I can track one down!
Regarding… “cork”… sniffing, well: it is a forum full of guitar guys who are fascinated by playing as FAST AS POSSIBLE. Ha.