I recently traded in my cubic zirconia solitaire studs for the moissanite version, and the upgrade was definitely worth it. My previous pair lasted me over 3 years, so I already knew the quality was good.
The moissanite has noticeably more sparkle than the CZ, especially under natural light. I also love the updated design with the hidden side stones—they add an extra touch of brilliance without taking away from the classic solitaire look.
Compared to my previous 4-prong setting, this new 6-prong version has an open gallery, so the stone sits slightly higher rather than being completely flush against the ear. It gives the earrings a more elevated and premium appearance while still being comfortable for everyday wear.
If you're deciding between CZ and moissanite, I'd definitely recommend going for the moissanite. The extra sparkle and refined setting make it feel like a worthwhile upgrade.