I haven't seen the movie yet, but from the things I'm hearing It's not great.
So let's take a look at a few figures we do know are great.
Jada Toys: Mostly known for doing die-cast cars, did a fine line of Batman v Superman: Dawn of Justice figures. Each die-cast figure stands 4" tall, with some figures having articulation (Wonder Woman's waist). These figures are heavy and most are painted very well. Do a quick inspection though as I saw a Superman I was going to buy, but his hand had skin color paint up on the Superman suit. This line has 3 different versions of Wonder Woman, 6 different Batman with various Batman garb (even an unmasked Batman). Jada Toys did also do two 6" tall Batman figures in this line(One comes with removable armor). The Batmobile gets one treatment here, but it's ultra cool. Superman has two different figures. I can't tell much of a difference though, Ones suit is brighter and more defined and Superman seems to have a darker skin tone in one version. Don't worry Aquaman makes one appearance in this line too.
There are also two Batman v Superman twin packs including Batman and Superman in both.
Funko Pop's Batman V Superman Dawn of Justice figures are what you'd expect from pop figures. Large black circles for eyes (Batman's are white) and in a very lovable pose. This line has many variants from Batman Vs Superman Walmart Exclusive GITD double packs (unfortunately you have to shop the box store) to the Hot Topic exclusive Aqua Green Aquaman. Sure there's more, but you get the idea.
Both these types of figures will run you under $20 (USD) a figure (double packs are more). This is less than the price of a movie ticket. So should you run out and see a movie that maybe you can wait until it's released on Blu Ray or DVD, or should you grab yourself a keepsake that will probably look pretty good in your collection?