I have a Series 4 Gold Stainless Steel 44mm and love the new materials, especially the regular Titanium and the Ceramic. I am torn between upgrading or not, and which case I should choose. Love both models, but concerned with potential scratching on the Titanium model. I have a Submariner that i wear to dress up but love wearing an AW for daily use especially since it helps keep me on time for meetings and othe events, and can quickly glance at my watch to understand all the important information I think is relevant for me. I also use it daily for my HIIT workouts. Appreciate any perspectives shared from others that have upgraded or chosen either Titanium or Ceramic and reasons for doing so!