It's funny. One of my other favorites is a M200 Red Demonstrator. It has an EF nib which, used straight, produces a line too wide for me. But used turning it a little bit clockwise, it produces lines with texture and personality, and it is a delight to write with it (in some situations, of course).
Now that I must admit I have at least partly a collector's soul, you will know more about my pens. Of course I will keep you and all the friends here posted. This site is really great!