You got that right Isaac, Use it in a "51" and you don't notice it ... I use the bulletproof's all the time... stay away from BSB tho.... been known to eat a few feeds.... I use it only with dip pens
I got Noodler's as my first ink purchase ever. Put the Manhattan Blue in my "21" (first fountain pen ever) and it's awesome. Put the Blue-Black in my new Esterbrook...real nice as well. Both great colors. Now I'm looking for a brown to use in my new brown Estie...