Have 50mm f/2 "K" version and Nikkor-H 50mm f/2. Also own the 50mm 1.8G and used to have the 1.8D. The "D" wasn't as good as the others. Overall, prefer the H for it's "wholistic" rendering and the 1.8G, which is a fantastic modern lens wich beats the 1.4G, which I also had. Never used the 1.8 long nose or pancake.