Thank you for this Erica! It's great to see all of the different nibs with the same hand and same word. Since I am just starting out and trying all the nibs for the first time, it's sometimes hard to feel all the nuances. That being said, I sure can feel the difference between something like a Nikko G to a Leonardt Principal, etc. It sure is fun trying all the nibs!
I read that you recommended the Hiro/Leonardt 41 and Nikko G, and in Eleanor Winters book she recommended the Gillott 303/404 so that's what I'm sticking mostly with to learn the letterforms. After I have the basic stroke down, I figured I would try all the nibs to see which ones work best for me.
This is a great reference that I will surely use many times in the future!