@cygnoir These are pretty cool inks. The sheening in these is really nice.

I didn't know about Inkvent until I looked it up. Is this something they do every year?

I had sort of given up on Diamine after I had some problems with the inks getting too dry in some my pens, but that may be because I was using them in too fine a nib. I've had some good luck with them with broader nibs.