As much as I like Noodlers ink, its too unpredictable. In the sense that there are too many pens (including Noodlers pens....) where the pen will occasionally skip, or frequently skip, or not flow after lying down for a few hours or overnight. Some work great, some don't, and even worse some surprise me by working until they suddenly don't when something important is happening. All the marks of its very interesting but problematic color saturation.
I know its the Noodlers ink, becasause the same pens, filled with my "standard" inks - Quink black or Waterman Blue/Black, work just fine, no problems.
Same for PR, though they are somewhat less of a proablem for me.
I have read of suggestions that Noodlers can be diluted with some water to improve performance without reducing the color intensity, or even worse causing flow or feathering problems.
But how much water? Your experiences would be appreciated....