I like the Topaz a lot. The Tanzanite looks much better in person than it does on the screen.
I like the way they look.
I've never tried the 4001 ink and have nothing to compare (in terms of Pelikan).
I like my Blue ink bright (though I don't use blue often).
These look nice and bright.
Damn, I was going to say that the colors for Iroshizuku were better but I do like that Onyx and the tanzinite. Oh and I thought six inks was enough. Wish I did not have to keep my inks and pens at work. I have no place at home to put them. (long story) My desk is getting too crowded. Heck I even have a straight razor in the drawer.
I just opened the Jade yesterday to put into a new green Esterbrook and I really like it.
Beautiful color as well. It seemed to go on easily, no bleed nor blobs.
Sometimes you owe it to yourself for a treat.