Bit late to the party here but here's my two penneth-
Lovely shoes, however Sling Back style is very current, it comes in and out and the branded ribbons will age them more than anything else.
Same with the Kitten Heel, its a current trend.
Simply black heels are timeless, but as soon as you do anything to them they become a pair which can show age, examples such as a conical heel, Super pointy toe, High or low toe box. Cut outs.
My recent purchase was the fannylove louboutins, bit of a chunkier heel than most. and they fit like a glove ❤