This is a pen I had to think long and hard about getting. I knew, on one hand, that it would be perfect for me. I knew I liked the feel in hand of the 149, and I had tried an O3B nib on someone else's 149 and loved it. Price was the only thing that held me back. When I finally pulled the trigger I ended up with a pen that has become a favorite of mine. The nib is very smooth , and has tons of lovely line variation due to it's shape. To get the O3B nib the pen has to travel to Montblanc for a nib exchange, which to me seemed like a daunting process, however Appelboom made it easy and did it for me, something I really appreciate. Overall it is an expensive pen, but I haven't regretted my purchase. Furthermore, Appelboom's excellent service has won a repeat customer! -B