Look at em with just your eyes at 8 inches,15 inches and over 20 inches in multiple lighting conditions and pick the one that you like the most overall.
Take notes as you go along, then share what you find.
I'm not blown away by either, but if I was choosing one, I'd choose the one with more fire over the whiter one. When they are not side by side you won't notice that it's not as white. (I also know that capturing the flashes is not easy. I've tried taping gem stones that look great to my eye IRL, and then don't flash that way in the videos. I don't know why, but it's frustrating always having to say, "It looks better IRL".)