This boxset is a must have for any Superman/DC fan, as it contains some of the best DC animated movies out there! similarly like the other reviewers have done, I will do a short review on each film
Superman: Doomsday-One of my favorite DC movies. This contains some fantastic fight scenes, great animation and a very well done story. The fight scene with Doomsday will keep you on the edge of your seat! 8/10
Superman Vs. The Elite- My second favorite DC movie and probably one of the most overlooked movies of the DC universe. The animation here is SUPERB and has some very impressive fight scenes. It also shows what Superman might have been like if he didn't have his "killing is wrong" attitude....and boy, is that scene epic!-9/10
Superman/Batman: Public enemies- Fighting, Fighting and more FIGHTING! This movie is mostly taken up by long fight scenes, which isn't a bad thing, but it isn't in particularly strong in the story department, which may put off some viewers. But seeing Batman and Superman work together is alot of fun!-7/10
Superman/Batman: Apocalypse- A bigger improvement over Public enemies IMO, as it includes a better story and alot more character development. The last fight scene is probably one of the most impressive animated fights i have ever seen. The only bad thing i have to say is that it mainly focused on Superman and Supergirl and less on Batman, but this is only a minor nitpick-8/10
Superman: Unbound-Not only is this the worst movie in the boxset, but it is also the worst of all the DC animated movies! Poor character designs, Awkward animation, boring plot and lame and short fight scenes! What a huge disappointment!-3/10
Overall, This set contains some fantastic movies (apart from one) and is definitely worth the money!