I went to the Art Brown International Pen shop at 2 West 45th in NYC. I purchased 1.1mm and 1.5mm Lamy nibs for my Safaris. And they are great. Also dropped a bit on an Aurora Ipsilon. Feels really nice in the hand, and it's really smooth when the angle is nice..but the nib needs some tuning before it's perfect.
I'm trying to figure out a place for pen people to post messages, etc. Of course there are already websites dedicated to this, but I was thinking maybe there was a "social" system angle.