I just bought these and judging by the feel and packaging am quite impressed. The plain cardboard box opened to reveal individually cellophane packaged rings, wrapped together with a tie. Each ring feels nicely and heftily built, with ball bearings rolling smoothly and protected from sliding off by a kink in the hoop. The plating feels good quality.
The design is a great idea - they went on the bar easily and I appreciate not having to squeeze a hook to open like the other designs even Moen sells.
The ultimate success will be that these don't rust (bearing out Moen's "buy it for life"). Will know in a few months.