Nakayas, under the hood.
Where you grip a pen matters.
Under the cap, Nakaya pens are very different from one another.
There are minute differences between Piccolos. The Neo Standard has a slimmer section with a more obvious taper, but capped, it looks similar to the Long Piccolo. The Long Piccolo dwarfs the Piccolo, yet their section lengths are almost the same. All of these factors contribute to how the pen feels in the hand.
It’s really important to be able to try a pen before you buy it, especially when it’s a pen you’re going to spend a lot of time with. If you have a pen meet in your area, go. That way you can see if the eye candy you’ve been vicariously nomming writes as good as it looks, and feels right when you hold it.