I love this pen. Uniball Signo 207 0.5mm micro in blue. It’s the only pen I use, and I buy them by the box and always have a couple in my pocket, in my desk, in my backpack, in my car. I love the smooth gel ink, and with the micro tip it’s not too much ink and doesn’t bleed through my notebook paper. But it seems to often run dry early; there’s still 25% or more ink in it, but it becomes inconsistent and scratchy when I write with it. How do I fix this? Or, what other pen model should I try?