Real owners lean toward the TWSBI Diamond 580: 77% of 394 owners recommend it, vs 67% of 379 for the Lamy 2000.
Verdicts aggregated from Reddit, enthusiast forums, and YouTube owner comments — affiliate reviews excluded. Sample sizes differ; judge accordingly. How we score
“Lamy 2k I got in oblique double broad so I definitely don’t find it dry. I thought it might be too broad for me and considered sending it to a grinder but I’ve been loving it lately.”— karunamoon on Reddit
“The Lamy 2000 was something I considered a number of times in the past even though I wasn't exactly a fan of the modernist design. That's changed since and I'm very happy with it.”— draconicpenguin10 on Reddit
“So although my personal opinion is pass, you may actually love this pen.”— Tarentum566 on Reddit
“TWSBI is the only pen I own that you can set aside for months, pick up and use without issues. They are airtight beyond imagination.”— @Erin-Thor on YouTube
“I love them both.”— @ShariArts on YouTube
“I vastly prefer my ECO to the 580. I ended up selling the latter, it just didn't feel or write as well, but the ECO just feels right and doesn't lose anything if you ask me!”— @markdryden8240 on YouTube
Real owners lean toward the TWSBI Diamond 580: 77% of 394 owners recommend it, vs 67% of 379 for the Lamy 2000.
Owners point the Lamy 2000 at someone who wants one pen inked and in hand every day instead of a rotation, and office notes, meetings and lecture writing, where owners want a pen that vanishes into the background.
Owners point the TWSBI Diamond 580 at writers wanting large ink capacity via piston filling, and fans of demonstrator pens who like seeing the ink.
The most-cited downside of the Lamy 2000 is tapered brushed-steel section is slippery enough that owners' fingers slide toward the nib, and some could not write with the pen at all. For the TWSBI Diamond 580, it's nib dries out and skips during long writing.