I also love the Memento Tuxedo Black. I also have the Rich Cocoa that I use when watercoloring OR using my pencils.
I really debated about getting it b/c I have SOOOO many black ink pads -- but it is wonderful!! Michael's does not carry this brand nor does JoAnns.
Archival Ink should be really good too for not smearing...but I don't have that one so can't test it.