I love the pens from ChubbleGum <3
They have an amazing dark ink that is easy to read and smooth to write with.
The charms are removable so that when the pen dies, you can still keep it! I find this to be awesome and less clutter than keeping the whole unusable pen.
I will say that after a time, the picture on the charm seems to start peeling (I've had this pen for several months and have used it frequently)... at least it did on my Dumpster Fire.
I have several others, and they have not had this issue.
I still love the pens and the quality of the product :)