After reading different threads, I am amazed at how some people go through picks. Personally I don't really tear up picks very often; I will go through celluloid the quickest, then tortex, and then if I play really aggressive I can rough up nylon. But even with celluloid in a practice setting it might take me a week to make very noticeable changes, maybe longer. I was curious how quickly other forum members go through picks, maybe list what material you like and how long it lasts for you. I'm particularly interested in the guys that use heavier gauge Gravity and vpick acrylic picks. I have a few and wonder what kind of life span they have. Any other boutique pick guys can chime in too.