Another vote for Knife Party! Those 2 are from Pendulum. If you want a really heavy & more underground not 4-on-the-floor sound, my friend Kinman does this blog called bassweight society where you can discover a lot more artists:
http://bassweightsociety.com/
A-RoN, I don't know if you meant to do this but your logo looks like one of those silhouette illusions (sunglasses or bow-tie?). I love illusions.