Clairefontaine paper not so great
"I am unimpressed with the vaunted Clairefontaine paper. The following inks showed some feathering, which is the absolute worst characteristic a paper can exhibit.
Iroshizuku Kon-Peki in Pilot Custom Heritage 92 FM
Robert Oster Bondi Blue in Pilot Metropolitan M
Robert Oster Fire and Ice in Nemosine Singularity 0.6mm.
I would not purchase this product again. I'll be sticking to Tomoe River paper so that I know it'll handle anything I have."