Having only got a La Nouvelle Veine I can't compare against any other coti (slippery slope to CAD there... lol) but I can happily say it's given me the best edges off any stone I own. Several times I've shaved off an edge from this stone and not needed any post shave balm etc. Other stones have left my skin feeling zingy and sore. I don't get a very good HHT from my honing (maybe as I have fine head hair and use my chest rug instead) but arm hair comes off with a sweep and I enjoy my shaving rituals.
No idea what results I'd get from any other coti though but I don't think I'd be disappointed in not finding out.
No idea what results I'd get from any other coti though but I don't think I'd be disappointed in not finding out.