+1 for the Twisbi Eco. I'm not a fountain pen expert but it's always served me well, and I love the piston filler and general maintainability. Great as a pen th

+1 for the Twisbi Eco. I'm not a fountain pen expert but it's always served me well, and I love the piston filler and general maintainability. Great as a pen that gives a good writing experience but isn't so expensive that you're scared to carry it around with you or throw it in a bag. And the extra ink capacity means I can take the pen on short trips without bringing ink along with me.