I've decided to go for GB. Don't like the Aerosmith rules that will be used in GOTG that much for the wizard mode achievement.
Also a little disappointed by the reused layout (iron man / metallica). And no fan of below playfield magnets that randomize things.
Also no big fan of the movies of GOTG or the music used in it (yes I was born in the eighties..). And I really don't like the star wars theme at all (never did)
But really love the artwork on GB, rules, different layout and the possibility to blow up the scoring. + custom speech. And of course hoping for a killer next update