I did get the 1.5 nib on both of them. As you can probably tell from the picture, the Eco writes a touch thinner than the Vista. The Vista also writes a bit wetter but the Eco is not dry by any means.
As TWSBI has stopped selling the 1.5 nibs, I wanted to get one while I could. It is tame enough that it will easily work its way into my EDC rotation.
Both write great. The Eco 1.5 can be an everyday pen whereas I think the Lamy 1.5 is a little too wide to be used for everyday stuff.
As I said, I just got both of these so I can't say which would be better for long writing sessions. The Lamy obviously has the triangle grip, I don't mind it at all but some people do. I'll call this a tie.
You can judge by the pictures what you think is better looking but I think without a doubt the Eco with the massive ink in view is much sexier looking. I'll give Eco the win here.
Once you buy the converter for the Vista, the prices are quite similar. Again with the piston filler technology you're getting with the Eco, I'll give the win to it. Side note though. Lamy nibs are much cheaper so big edge to Lamy for that. If the 1.5 is too big for EDC, a different nib can easily be bought and viola, now you have an EDC.
The Vista is basically a clear Safari. Amazing pens. Been around for decades. The safe choice. Choose this if you want one pen with multiple nibs.
The TWSBI Eco Clear is the sexy new kid on the block. If I had to choose just one, I would take the Eco for the looks, piston technology and the fact the 1.5 nib can be used everyday both at work and at home.
Edited by 1C5, 31 March 2017 - 03:27.