Play doodling with the newer Sailor Fude pen received. It has a 40 degree angled nib whereas the first Sailor Fude I purchased had a 55 degree angled nib.
After playing with this SF 40, I think it's much easier for me to maneuver obtaining the various line widths I can achieve. It seems I can hold the pen in a more natural angle (for me) than I can with the SF 55.
Even with that said, I do like the Sailor Fude line of fountain pens. I like the lighter weight pens and with these, I like the longer barrel which holds an extra ink cartridge.