During a long conversation with my friend's father yesterday, we began talking about woodworking. After showing him some pictures of the few pens I've made (I'm new to all of this), he seemed really impressed. Then he said something along the lines of "They look the part, but how do they write. That's what really matters." This got me thinking most of the pens I make are 7mm (slimline, comfort, designer, trimline, ext.). I know that these kits except cross-style refills, and would like to purchase some refills that are upgraded from the standard ones that come with PSI kits, preferably a gel refill. Does such a thing exists (gel cross-style refills), I am also open to any other suggestions. Mainly wondering what the best cross-style refills are that you all have used. Appreciate the support, been feeling very welcome in my first days here.