Well I'm in my 20s and I make a point of getting both - I think both can be stunning. I started with pieces in WG and am now introducing pieces in YG and RG. Ideally this year I'd like to be looking at a chunky YG or RG ring from Cartier, possibly a lovely YG bracelet or bangle (Hermes Clic H in taupe enamel looks nice!) and maybe a pair of YG earrings and a pendant. Not all to be acquired this year of course! But just to be tried on and planned for.