I bought the JUC first. I woke up one morning with a thought that I have to have it. I always liked the look of a simple gold wire necklace. I don’t think you can find anything as reputable as the JUC in that category. I have had mine a little over 2 years. Honestly, I found myself even falling asleep in it, that’s how used I got to it. Of course I take it off overnight. I have not had any issues with bending. The wire is pretty flexible and sturdy at the same time. I have a thin neck and I went with the medium size. Some SA recommended getting the larger one based on the size of my neck, he said otherwise it will not sit in a correct way. However my SA told me to go with the medium, and I took her advice. It is hard to advise on which one you should buy first. A lot depends on your personal style and lifestyle. I wear the JUC more often than guilloche. I think it can be an impactful everyday piece. I will upload some photos, hope they will help to make a decision.