I know of some people that higly recommend Winsor & Newton inks. You probably need to dilute them a bit. They are supposed to dry fairly quick and leave a satin finish. I haven't used them myself though.
I tried these and found, as they aged, they developed residue and bits floating in them. This is true of other calligraphic inks too.
I like acrylic inks much more; like the Liquitex and Daler Rowney ranges. They can be expensive but are often on sale in art shops and you get a huge quantity for your money compared to the hugelyoverpriced Games Workshop little bottles.
The great thing about inks is they're not prone to drying up like paints and they last and last - I have a set of Rotring inks I still use that are at least 15 years old.