Hi pen friends! In this NEW PEN DAY, I’m finally sharing my first-ever TWSBI Onyx pens—and I went all in with two at once: the TWSBI Eco Carrara and the TWSBI 580 Affogato. I unbox both, take a close look at the details and finishes, and then do a side-by-side comparison that’s actually useful if you’ve been eyeing either model. I also compare the nib sizes I chose, do writing samples, and talk through my first impressions on flow, feel, and how each pen behaves on the page. The big question I explore is the one I know a lot of us ask: is the 580 worth the upgrade from the Eco? I share what stood out to me right away—how they differ in hand, how the writing experience compares, and what I’d personally reach for depending on my journaling mood (cozy writing sessions, planner days, or just when I want that extra “new pen” excitement). If you’re deciding between Team Eco or Team 580, this video should help you narrow down what fits your style and budget.