Product review (5 stars): Pricey, but worth it if you are into details and quality.
A bit pricey, sure, but when you see that it is one solid piece of metal, with no plastic on it at all, and get it installed, just perfect.  Used mine in a Hahn ZR006 sink, and had to use a bit of plumbers putty underneath because the rubber gasket from the original flange was stretched out. Matches perfectly for the stainless version.