Help me decide:) (Read body text)

So I’ve been saving up to be able to afford to do this. Should I use my Legendary color pot and BIOHAZARD pot (btw that was not cheap) {Maybe even LegE pot} on my Mosu or my Kiki? I love them both but I want ones that for one have high damage and two, that will continue to raise in the future (incase i decide to sell one) BUTTTTT also which one is the cutest 🫶🏻 tyyyy!