I have championed the old nylon Jazz IIIs for a while now, as they have always felt very comfortable to play for me personally. But after stumbling upon an old thread here by accident I thought I'd buy a bunch of the tortex ones (I was starting to run out of picks so ordered a few different ones for comparison) I couldn't believe the difference in attack between the tortex and the nylon. I mean it's not like it instantly transforms your tone to God-status, but there really is a noticeable difference. So yeah, if you haven't already.... try them out. I feel like a plum for not knowing this earlier, so apologies if this has everybody face-palming. But it's bound to be useful to at least someone.