IMO, if your e-ring is white gold, I think your band do white gold better. White gold and platinum wears out differently. White gold will be slightly yellow and platinum will be darker colour. So if you wear together, you will see the difference over the years.
Mmm this is something to consider as well, thanks alot for the suggestions!!! When white gold gets worn out can always bring back for polishing and it will be as good as new right

