Always loved GTA games so maybe I should rent one, or both, of those.
If you see GTA IV: The Complete Edition, rent that. That has GTA IV, the main game as well as the DLC episodes. All 3 characters that you play as have things that happen in the course of their story that affect the other 2 characters (always in a negative fashion, as you'd expect with a GTA game), so in order to get the full understanding, you need to play GTA IV as well as both DLC's. That's not to say you can't understand each story, but if you were to just play, for example, The Lost And Damned, there's a certain scene that happens early on in the game, and if you didn't play GTA IV, you wouldn't see that event from the other side. There's many examples of that.
I'm not too familiar with either but I think I'll say Electronica because I've heard nothing positive ever said about Dubstep.
Royal Rumble match or Survivor Series 5 on 5 match?