Was traveling this week and didn't get a chance to open the box from Amazon until today. This set turned out really great. $40 is still a bit tough to swallow, but not enough for me to pass on the set so Hasbro wins again.
Looking at the pics on pulse, sometimes the Vader is called "Darth Vader (Showdown)" and other times it is "Darth Vader (Duel's End)". Weird...

In case the variant hunters were wondering, the pack I got from Amazon was the "Darth Vader (Duel's End)" version (on both the box and cardback).