On a whim, I finally ordered a LAMY Safari and was really surprised at how much better the writing experience was. I noticed my penmanship improved and I was able to write more easily on parts of the page that I normally struggle with, such as near the binding in some notebooks.
I attribute most of this to how easily the ink flows compared to other types of pens, although I'm sure the pen shape is also a factor.
Anyway, if you write a lot and just want to write more easily and a little better, I'd recommend giving a fountain pen a try, and I think the LAMY Safari is a great place to start (it is relatively cheap and the cartridges are convenient).
I also love JetPens and order most of my pens and stationary from them.