There are so many fantastic inks…. But I only care about Yama-Budo! (J/K)
Actually, Yama-Budo for personal pens. Waterman Serenity Blue for nib grinding at www.NibTailor.com
Did you know that you can compare the inks listed here with your own (i.e. only show those that the other owns that you don't) if you create an account on the site and enter your inks? You can sign up here.