Hi! My vote is the Clover. I am the opposite of you; I have a Clover and have thought about getting the Single Row.
I don't stack as I don't like the clicking sound which has stopped me from buying the Single Row (I may cave later and get it as I do think the Clover could use a buddy next to it for more presence on the wrist).
I tried on the Clover on with the Single Row, a second Clover, Signature, and Three Row. I personally think the Single Row looks best with the Clover. It is a gorgeous, glamorous, and blingy combination.
The single row has the beaded edge that will go beautifully with the Clover. The sparkly diamonds in the Single Row will complement the artistic design and craftsmanship of the little Clovers in the Clover bangle.
I am not a fan of stacking it with the Cartier bangles. Why?
First, both the Love and JUC are very industrial looking. To be more specific, the Love has a very hard edge, and I personally think when stacked, it takes away from the glamorous look of the Single Row and the beadwork. The beadwork is gorgeous which is what should be highlighted. The Perlee collection is all about rounded curves, no hard edges. With the Love being so sterile looking, the Single Row stacked next to the Love has now lost its glamour and has turned into just a tennis bangle. I don't think the JUC works at all. That's just me of course.
That said, it's all preference, and lots of people throw on all these bracelets and love it. I do think people who do that prefer to flash logo bracelets, so it depends on the look you are going for as these bangles give off very different looks. For me, I prefer more an elegant coordinated jewelry look vs. a logo stack jewelry look, which I think is what the Love has become.
Hence, I vote the Clover. While it is not as recognizable as the Love or JUC, the Clover is pure art. Best of all, the Single Row and Clover together give off a "high-jewelry" vibe that neither the Love nor JUC can do. Love and JUC is very casual and industrial looking. I personally prefer more glamour for my jewelry look.
Again, this is just my opinion, but I wanted to share for another point of view. I hope this helps in your decision. Good luck!