I like them. Don't use pens much, used to be a bit picky, either fountain pens or roller balls or gel, but they'd always leak or be dry or not be ready to roll when I needed them.

I had one Cristal pen that I managed to hold on to and use through at least three moves and 8+ years, until I finally ran it out of ink. It didn't get lost, destroyed, eaten (by puppies or humans), or quit working -- until there was nothing left of it. It was a small accomplishment, but one that I'm absurdly proud of.