I agree with that it depends on the size of your wrist, if you prefer chunky or more subtle/elegant pieces and if you want to wear it alone or stack it.
I am considering a JUC with diamonds myself and honestly, I like both sizes. I tried them on a few weeks ago at Cartier. I have small wrists, I think the small JUC with diamonds looked very elegant and nice with my stack/watch while the regular JUC really made a statement on my wrist. My SA recommended the small one for me, she thought it looked best with my stack and for the size of my wrist. It all comes down to personal preference.
I am considering a JUC with diamonds myself and honestly, I like both sizes. I tried them on a few weeks ago at Cartier. I have small wrists, I think the small JUC with diamonds looked very elegant and nice with my stack/watch while the regular JUC really made a statement on my wrist. My SA recommended the small one for me, she thought it looked best with my stack and for the size of my wrist. It all comes down to personal preference.