I don't think I have nominated any here for best tuck box. So, I'm going to haha.
I nominate Gnostic Rose Gold by Stuart Palm. Awesome tuck! Some great photos of this amazing tuck can be found at CARC.
Out of curiosity, why just the one color? I've listed it simply as "Gnostic", since all three colors have their charms and are of the same basic design.
Of the three it is the most dramatic and unusual. Black paper with copper and silver foil on the outside, copper foil on the inside, wow. That's a truly intense color combination and it reflects on the tuck. Absolutely gorgeous, I'm sure that people who own a copy of all three agree with me when I say it does stand out among the other two tucks. Sure, I love them all. I like this one more and so do people who see the tucks when they visit. They always pick up the Rose Gold first, admiring it while I tell them a little about the decks. If the category was best tuck set, I'd nominate Gnostic overall. I don't see it that way, I read it as best tuck period.
While there are some differences in terms of colors and foil, to be sure, the series of three decks had in essence the same basic design in all three cases. Hence, I'd consider it as the tuck box for the series. If the box was radically different, like the difference between the silver and gold 52 Plus Joker 2014 deck, then I'd break them out into different nominations.
I wouldn't sweat it, really. If anything, being part of a series buoys the chances of a given deck - three gorgeous examples of the art, in this case, rather than just one.