I bought this pen even though I didn't like the look of demonstrator pens, and it is so nice! I even went on to buy the Diamond 580 RG from another website where there are some different inks. I think this pen is a really great buy.

Such a smooth writer, it’s like writing with melted butter! Cute, dependable, inexpensive. Very happy.

They are great little pens for traveling and every day use!!! Not expensive and they do the job!!!

Maybe I got a one off but I am having problem with it. I have only heard great things so I ordered one. I just can't keep it writing. I tried more than one kind of ink, washed it out as well. It will write then stop as if it ran out. I have to wet the nib to continue. Also the cap feels like had been over tightened so it's a weird feel.

The ECO is priced a little too high in my opinion. I chose it in the 1.1mm. I have the Diamond 580 and will be choosing that model moving forward. Holds lots of ink and writes well. GPC is great, thanks.

I own A LOT of TWSBI because I absolutely love the ECO and have every tip in various colors just because they're so well priced

For the price, TWSBI is my favorite budget brand so far. I definitely prefer the rose gold plated nibs the best. I own multiple colors in both extra fine and fine and I love all of them.

Nice looking, writing and filling

This pen, with the 1.1mm stub, is fantastic. My normal writing looks like fancy calligraphy. This is my 2nd one of these pens. They hold a lot of ink. No leaks on airplane flights.

It's my first slightly more expensive pen. It is exactly what the hype is all about, don't think I will need to get another pen for a really long time!

I have many pens in my collection and was a bit weary of buying an inexpensive pen, even though it looked nice.
Nice surprise, I tested it out upon receipt and found it a very smooth writer but with little variation in the lines. Still it looks great with deep blue ink and I got compliments the first time out of my house. And it writes so nicely. I now have a very high opinion of TWISBI pens. I need to try their ink soon.

Good looking, comfortable in the hand, reliable, a joy to write with. The fine nib creates a line comparable to my TUL 0.7 mm gel pen. Just right for me.

Amazing how quickly this arrived. You always have what I'm looking for.

I got the extra fine ones and THEY are the ones that write nice and smoothly for me. I’m not sure about the fine ones.

I changed the nib sizes to extra fine before they were shipped, but I’m pretty sure I ended up getting fine nibs anyway which sucks. Then again, I heard there was no real difference between the Eco fine and extra fine nibs.

I was looking for an inexpensive fountain pen for everyday use, but one that would show its quality in both its appearance and how it writes. This pen with a 1.1mm nib fits the bill perfectly. The writing is obviously not something from a ballpoint or rollerball; the broader nib gives it depth and dimension that I love. And the combination of white barrel with rose gold highlights is eyecatching, while not being so expensive that I'm afraid to carry the pen wherever I go.

Beautiful pen! Comfortable when writing although a bit long.

Soon after I placed my order, I realized I had accidentally ordered the wrong size nib. Thought I was going to return it, but I ended up enjoying the extra fine nib - it suits my tiny handwriting so much better! To me, TWSBI Ecos are a staple and I love my latest addition!

This is the third TWSBI Eco I've purchased. Obviously I like the brand. The nibs are smooth writing, and the huge ink reservoir and convenience of a vacuum filler are probably why I keep coming back to these pens. For the price, you can't beat them.

I love the look of the rose gold pens, but after over a year of experimenting, the ECO model just doesn't work for my hands, I much prefer the 580. That aside, the pen is beautiful and the white/rose gold combination really pops. It never fails that someone wows when they see me writing with this in public and I've never had a TWSBI nib that wasn't silky smooth.

Excellent shipping, great product, wife loves it!

I have only loaded it once but so far it is very smooth and the medium is a little bolder than I would prefer, but the pen feel and look makes me happy. If I didn't have so many inexpensive pens I would order it again with fine tip, but I love it anyway and will try it with a lighter color ink next fill.

Very good. Writes well. Good pen for the money.

Very good pen love the color and how it writes

Excellent, smooth pen for writing and drawing, and looks cool too.

Love the way this writes!

I bought this as a gift for a friend to get her into fountain pens! Twsbi was my first fountain pen and now hers!!

It's a beautiful pen that writes buttery smooth. I normally like a fine or extra fine nib but I'm so glad I got this with a medium nib! TWSBI never disappoints!!

I'm typically not a fan of gold/rose gold, but I thought the white and RG combination was too good to pass up. I paired it with Iroshizuku Fuyu-Gaki (Orange), and it loos fantastic. I typically use it to highlight or denote something, but often find myself just reaching for it to write my notes. Love the colors, and ink combination.

After having and using fountain pens for over 70 years, and hearing about TWSBI pens on the Fountain Pen Network on Facebook, I decided I had to try one! WOW! Was I pleasantly surprised! This pen, my first demonstrator, was such a pleasure to write with! Nicely balanced, a smooth writer and I can see the ink supply! I just love it! If you've never owned one, you should give this one a try! It's also a real looker!

The Eco has always been reliable as a daily writer and the Rose Gold version is no different, although it may be more for people that really love this color since the extra cost does not equal extra performance.