I went lighter than stock, still 16". Audi A8 "Winterfelgen" (winter wheels) forged, exact fit and slightly wider. Around 16lbs/wheel vs 19lbs or so for factory Astana.
Looks like some of the vintage moddified Mk1/Mk2 VW Golf/GTi and feel excellent with Continental ECS02 tires.
Feels slightly perkier - about 4-5lbs less per wheel to move/rotate/stop is somewhat noticeable.
Combined with Koni Sport (Yellow) shocks, Eibach Euro ProKit Springs for eGolf (non-progressive) and a 22mm Whiteline rear swaybar.
Still smooth, quiet, compliant - but more stable and less "bouncy" over bumps or transitions.
Family capable, fine over speedbumps/expansion joints.