Yes it is very Black and yes it does go in very fast, however, I find that when it comes to wiping off it goes into the pores and seems to set or dry on the skin and I am finding it quite difficult to wipe away. I don't use vaseline and only use distilled water/anti bac mix to wipe.I usually use ONE Black, anybody came across this, all help tips appreciated, Peace out P.

i found it to be exactly like kuro sumi in its consistancy, wiping up and ease of going in, just heals blacker, i cant be much help i use vaseline with the solid color work to assist in clean up.

I've heard good about it from a respected artist. What's wrong with Vas & Green Soap?

Cheers Guys, nothing wrong with using Vas, I got into a habit of not needing it when using One so its back to vas and green with this one methinx, cheers,P..

Although I haven't tattooed personally yet, so I can't speak from my own experience of actually using inks, I asked my tattoo artist about which ink he uses and this is what I learned:
He said that for black all inks are pretty much the same - apparently black tattoo inks are essentially exactly the same as a good indian ink (which is what he uses), just repackaged in smaller bottles and with an insane mark-up on price.
As far as I'm aware, (here in the UK anyway) there aren't actually any inks available that have passed any kind of government safety test to be approved for tattooing purposes, and all they are is pigment and some kind of carrier (such as witch-hazel) therefore, so long as you don't use ink intended for other purposes such as from a camera film or printer cartridge (as these have other ingredients to add a 'shine' to the product), and obviously use a reputable distributor you should pretty much get the same results, as I understand it.
He didn't drop any names, so I felt I shouldn't ask, but I've heard others recommend Talons(/Talonz?) drawing ink which is available here. (£36 for 990ml)
I'm sure many will disagree with this point, but I can assure you that (without name-dropping myself) this particular artist is world renowned, and specializes almost solely in working in black and grey, and I must say the black in the work I have by him is as black as any I've seen anywhere (and has required no touch-up)
Colours, on the other hand, are a whole different kettle of fish, as there are more ingredients that go in to making them, so you have to be a lot more particular about which ones you use, and should definately only use reputable tattoo ink companies.
I hope this helps - I think that while it's important to have the right equipment, with this at least it's all in the technique - how well you can get the ink in, without blaming shoddy work on not having the right brand. Just make sure that whatever you use doesn't contain any base metals and you should be fine - although even some reputable tattoo ink companies state on their bottles that they can't guarantee that their ink doesn't contain these.
With regard to vaseline, it's a controversial issue - many say that it's fine to use (particularly old-timers), while many others warn against using it for many reasons including blocking pores and deteriorating gloves. I would definately tend to side with the latter, but that's just me, and like I say, I have no actual hands-on experience. This issue is discussed at length in other posts though...