This is the sweet spot. The .38mm is not too thing or too bold. I found .4 to be too thick and .3 to be too thin. 0.38mm seems to be the sweet spot.

Also, as far as the color, its just the right amount of blue where it doesn't hurt your eyes but its enough blue to distinquish it from black.

Its the best!

I find the 0.38 mm version to be a sweet spot of fine, concise lines and ease of writing. The blue black ink is a fantastic alternative to the usual black but still professional in appearance to be used in a business setting.

The perfect everyday pen for jotting down songwriting ideas in my pocket Field Notes. A great combo for remembering ideas, phrases, etc. rather than trusting my memory or slips of paper. Great for journal books too, which I use to flesh out lyrics. The ink flows fluidly smooth, lays down a nice fine line with no scratchiness. I love these pens, almost as much as my fountain pens. Maybe more because I use them everywhere.

I started with green-black; which still has not run out of ink, even though I've used it every day for almost a year! I have since bought more; green-black, blue-black, bordeaux-black and brown-black. The black ink tones down the colors - they have become my signature pens. The only problem is that folks tend to "borrow" them. But at this price I can easily afford to buy as many as I need.

BTW - As an old-school songwriter I really love to put pen to paper. I buy all my writing tools from JetPens. You could say you guys rock, literally.

these pens are my pride and joy. ever since i accidentally stumbled upon one a few years back, i was hooked......to the point where i absolutely refuse to use any other pen. NO JOKE. my boyfriend thinks i have an unhealthy obsession with the pens, but i gave him a set to test out and he seems to be secretly enjoying them himself as well....=D

PEOPLE, you have to invest in one to see for yourself.

I love this pen! I first purchased one of these pens while studying in Hong Kong, and was impressed with the efficient, durable design. But when I got back to the States, I couldn't find the pens or refills anywhere. I stumbled across this site, and ordered a big box so I wouldn't run out again.

The tiny carbide steel ball (0.28 and 0.38 mm) means less ink is wasted compared to the American Signo line. At the same time, it writes as smoothly as a regular gel pen. My only regret is that I can't purchase them in bulk.

This color if perfect for work use (I work in banking, where 99% of everything you do must be in black ink). It's dark enough to pass as black and scan in correctly on official paperwork, but gives your work a bit of subtle flare while remaining professional. This pen would be perfect if it were a clickable rather than capped.

my new favorite pen :) writes so smooth and is such a pleasant color - not as harsh as black

Finally, Perfection!

I am an engineer, product designer, CEO of a manufacturing company and am currently taking graduate classes. This pen, in exactly this color, on high quality copy paper and my binder is all that I need to do it all, very efficiently and with a smile on my face every time I have to write, draw or read my notes.

I feel as if I have tried them all, have come back and forth to this pen a few times, and am blown away by this Signo .38mm in Blue Black. I feel for some reason that it is even smoother than the black and the color is not only amazing, but I feel easier to read, study and take information back in, when I am reviewing my notes. It's not good enough to write it. The reading experience is critical too. This Blue Back is Nirvana.

Thank you for offering it!

This is the perfect pen, hands down. I'm in college, and go through at least two of these 0.38 blue black signos each month. The ink flow is extremely smooth and uniform (I found the 0.3 Pilot Hi-Tech-C to be extremely scratcy), and the 0.38 fine tip is perfect. Personally, the 0.28 is too fine and 0.4 is too thick. The ink color is ideal, dark enough to use for everything, but just enough blue to keep it interesting! Great pen in every aspect, do yourself a favor and buy a few! (cause one won't be enough)

I love this pen. Feels good in the hand, writes beautifully. Every pen should be like this.