Best pick. Never really liked nylon picks before now.
Jim Root Nylon 1.38 mm picks are sic. I love the slightly less than hard attack, great for solos and strumming on acoustic and electric. Like an upgraded Jazz III XL with a pointier tip, and I love the Jazz III XL. Perfect rigidness, not fully hard and definitely not too soft.
I saw this recommended by a professional jazz guitar player and tried it. I have been using softer picks but after trying this one I see the benefit of using firmer picks. Some say they use the hardest picks they can find. This one is very close to the hardest one I could find and it works very well -- especially for lead lines. I really like it and recommend it highly.