hands down the best ink I have ever used is EJ special white auto. It's pricey, but it flashes fast, has high opacity and prints with the softest hand.
I wish I could get it locally, and not from OneStroke, they are just a hassle...phone calls, no online ordering(that I know of), shipping, waiting and so on.
They have online ordering, but I am totally with you on the shipping and waiting. I am probably spoiled though with 3 suppliers within 30min. if I need them and another 2 within a 1 day ship, 3 days seems like eternity!