Anyone seen U3 XM-L's in 2B tint?

Has anyone seen this tint in a U3 bin XML? Intl outdoor has U2 bin in 2B tint, wondering should I wait to get U3 or just get the U2

Not much difference between a 1C and a 2B in terms of tint, and there’s not much difference between a U2 and a U3 in terms of brightness. When the differences are so slight that you can’t make up your mind, maybe you should just get whatever is cheaper (or in this case, available).