Watching "The Daily Note", a YouTube video, Michael, the host, spoke about the 2 different nibs on the SPen. He pointed out that the tip installed on the SPen has a bit of a drag while the white one glides across the screen much more smoothly. So after watching the very short video, I decided to change the tip of the pen to the white one. There is a very noticeable difference in the glide. I've been using Notes since Note 2 and never changed the tip. Maybe I should have. Someone else might be able to clarify which tip is best used for different purposes. Honestly, I don't know. I'll continue to use the white tip for a while and see if I like it better than the black one.
For those interested, here's the link to the video I mentioned,
https://www.youtube.com/watch?v=3q6E8nWlky0