The first time I bought these pens, they were wonderful. Smooth writing, endless
ink supply, fantastic value. When I saw the new colors, I had to buy some more.
I was very disappointed with this newer version. Poor ink flow, if at all,
very disappointing performance. Won't be adding any more of this model to my
pen inventory. If it isn't broken, don't fix it!
I have used these pens without mercy and they just keep on writing, trouble
free, no ink blobs, no skipping, starts right up even when left sitting, great
value! I use to practice Zentangle work and they do perform perfectly. I've
not found the end of the first one I bought. Just wish they had more colors.