Drum and Bass, Pendulum. I love em, but what other music groups are similar?

Hey, i recently fell in love with Pendulum, also the first time i listened to drum and bass.

i tried grabbing a few other D&B tracks .. but i found them a little too intense and in your face sorta stuff... cant really pinpoint why i dont like the other stuff i heard.

but yea, whats similar to Pendulum... i like both, their heavy and mellow stuff

thanks guys :)