Heels: One style (one brand) in many colors. Which one would you collect?

Pre-2013 Christian Louboutin Pigalle 120. Very comfortable for me. I've been collecting/hoarding them whenever I see them pop up on resale sites since they are no longer being made.
 
Pairs and brands that I have multiple are:
Lanvin ballerina flats
Manolo Blahnik BB 105
Christian Louboutin Pigalle 100 and pre-2013 Pigalle 120
Christian Louboutin Clichy 100 and 120 (no longer produced)
Christian Louboutin Simple/Wallis/Mrs. Boxe 100 all the same shoe with a mary jane and wedge respectively.