The pilot 823 is on my to get list, but I have begun to wonder, is springiness, or bounce in a nib useful for long bouts of intensive writing or does it take away some of the efficiency? I'm guessing this also applies to monster nibs like the one on the pelikan 1000 and mb 149 etc. I write a lot and I'm wondering if this is going to be the right choice for me. I have a custom 74 which I use and love. What is your experience and advice?