Noodler's black isn't black enough for me, but Heart of Darkness is really nice and is now my primary ink. (That it references a favorite work of literature doesn't hurt). Pvt. Reserve Black Magic Blue is very yummy, rich and satisfying, and also has that nice formality to it, but I dunno about its permanence. I'd be happy to send you a little phial if you want to test it out, though.

I really wouldn't put the Abraham in your nicest pen; it is a temperamental ink and really does settle quickly. It's probably one of those inks where you shouldn't let it sit in the pen for very long, or use a dip pen, which is how I handle it.

Do you know about http://www.fountainpennetwork.com/forum/? They have a really awesome ink review section. Feed your pen geekery, man.