Depends on your personal taste, style, and lifestyle! Personally I prefer the MOP dial, but it is fancier than the champagne one IMHO and feels more like a special-occasion piece vs. a daily wear for me.
Personally I only like bezel-set diamond dials like the MOP has — I do not like the prong setting on the champagne option, so that would be a bigger reason for me to choose the first one vs. the second. I also do not like the black tick marks in between the diamond indices on the champagne dial; I prefer diamonds to be the only markers for a cleaner/less busy look.
But these are all obviously just my personal preference — both are lovely options and you should go with whichever suits you and your lifestyle best! Hopefully you can try them on to compare … good luck deciding! 💙