Has anyone ever heard of Lazy Nezumi Pro? I was searching for plugins to draw smoother lines, and I eventually found this. It looks great. It has the drag-string stroke, perspective tools, pressure sensitivity, and it works on programs like Photoshop, Krita, Paint Tool SAI, and Flash. I don't know if it works on Illustrator yet. That's what I'm currently looking into. I think this is definitely worth looking into for anyone who is interested.