...but they say their jet black isn't recommended for tie dyeing, just vat dyeing, and I didn't really want a green, blue, or blue-purple cast to my blacks when I'm tie dyeing so I passed on their other blacks.
I'm not sure of the specifics now, but in their descriptions of their blacks, there's somewhere that they recommend Half of This One, Half of That One for a really nice black...
I followed that advice, and I have to say my black came out as black as you could ever dream of wanting a black to be.
Since it rhymes, I'll have to say that it's kind of like "crack"-- once you try a little bit, you're hooked. (Seriously, stay with me here). Once I saw how utterly, unspeakably black it came out, there was no turning back-- I will never, ever, ever settle for a lesser black. The *real* thing is just so awesome, there are no words for it, (and what would an image on your screen prove?), it's something you have to see for yourself to understand. Unfortunately, just like crack, (I guess) it's really expensive. The powder disappears really, really fast...