I'm a little new here but this is something I haven't seen discussed much (or else I used the wrong search terms). I've seen Clairefontaine mentioned once or twice but beyond that I've not seen any talk about paper. And we all know that when you use a fountain pen, the paper is one third of the combo that can make or break the whole experience.
I generally use a Duofold Centennial with a medium stub nib plus several other pens of questionable origin and I've found, as most of you probably have, that nice heavy papers seem to work much better than the thin stuff. Amalfi from Italy is a nice one. It's hard to find in just individual sheets though....either in journals or writing sets. Last night I tried out a bit of Arches 90lb watercolor paper and it was incredible. It was the hot pressed variety. It's a little bit expensive though. I've read about Arches Text Wove......has anyone tried this? Rennaisance makes a nice journal filled with this stuff and you can buy it online. I've also used Cranes stationery and paper....it's very nice, all rag, works well with the fountain pen. Canson MiTentes is generally used for pastel painting but I've found that it works pretty well with my pen. It has a little bit of tooth but not so much that it interferes with the pen. Last week I bought a pad of Phoenician handmade paper and it's is VERY nice. It's got a bit of tooth to it but generally it's a very smooth paper that accepts large amounts of ink without bleeding. Only thing, the pad cost $24! At this point I think it's worth it though.
Anything I've missed?
Here are a couple of links to places where you can get some of the stuff I've mentioned....pardon me if you've already got them bookmarked!
http://www.artpaper.com/
http://www.renaissance-art.com/default.aspx
http://www.pantheon-roma.it/
This last one might be a little bit iffy.....it's where I bought my journal made with the Amalfi paper....I'm trying to find out if they ship internationally.







