Both of these brown inks are dark, but the Private Reserve ink is darker and richer by comparison. Both shade nicely, but the Ebony Brown has a richer tonal contrast, in my opinion. The Diamine brown is quite nice, it really is. I just rather like the overall package of the PR Ebony Brown more.
Here we have a tie. Both of these inks are a very rich and dark green which is absolutely gorgeous. The Diamine version does seem to shade a little which is a feat as they are dark colors and darker colors generally don't shade as well.
So here are my preferences based off of this comparison:
- Brown: Private Reserve Ebony Brown
- Blue: Diamine Deep Dark Blue
- Green: Diamine Deep Dark Green (for the shading)
- Purple: Private Reserve Ebony Purple
This post is based off of my experiences and opinions. I am not being compensated at all nor do I represent either company above in any fashion