The Uni Mitsubishi Propus are my favorite highlighters. Bought the purple,
brown, blue, and red one. Very smooth, great colors and the double sided tip
makes marking and highlighting a breeze. They fit perfect in the pen loop of my
A5 Malden Filofax.
I love a purple highlighter, though this one is darker than I'd like. Still
functions well as a highlighter and the double ended bit is great. I prefer the
lighter (rose?) purple to this, and I prefer the Propus or Monami soft color
highlighters, just because they are not as dark. However, that is my preference.
This is still a quality highlighter and it's eco-friendly though not refillable.