I have all three (JUC, Clash and Ecrou). I bought JUC, Clash then Ecrou last. I initially thought 1 is enough so I bought the JUC which is a classic piece. 😅 If you ask me, I prefer the look for Ecrou and Clash. Ecrou is more of an understated Cartier piece, not so common which is good. Plus, both are edgy pieces. But if you like a more subtle look, JUC and Clash can blend well together. Honestly, you can never go wrong with either. Btw, if you do plan to get the Ecrou I suggest you size 1 up from your Clash size. Though it looks bigger while worn, comfort wise it's so much better. For reference, I wear JUC and Clash (size 17) and Ecrou (size 18). Goodluck with your decision!