Private Reserve Infinity Blue/Black - Ink Sample

I've gotten ten different samples of blue/black ink. As they are all in the same general spectrum, my search is for a particular viscosity that will give the stroke I want with a fine point on the most common kinds of paper I'll encounter. They all work well on good paper, but the test will be on the lesser quality paper.

Hella Blue

Rich and nice.

As described

I have a pen with a bad cap seal and that always has hard starts, this ink helps prevent it. It works great! And the color is awesome too!