I found a brand of pen I had never seen until shopping in an art store the other day:
Sakura Pigma Micron
A felt-tip, designed as a drawing pen, but writes wonderfully. For “acid-free environments, ” archival quality. What I love – it comes in a variety of thicknesses, but the best part, it doesn’t bleed through to the back of the paper.
I happen to enjoy the feel of fine-tip writing pens, but never use them because they all bleed through to the back of the sheet. I’ve tested the Sakura 
Pigma Micron on a variety of papers, from porous to heavy. No bleed-through!
Yep, they are a little pricey. They’re not your drugstore brand. But worth every cent.
Art stores are a great source for quality, high-end writing tools and papers. I’ll be going back to try other goodies!
