Help choosing a new cartridge

Could someone with a little more knowledge than myself help me choose a new cartridge in the $500 range? I've got a VPI Scout and a EAR 834P phono pre. The 834P is low MC capable, but I don't know what the loading or any of that stuff is on it so I don't know what kind of low MC will work well with it. I've posted my system if you want to see what else I'm working with. I play mostly rock music, but more of the indie rock variety than the hard rock or classic rock variety. I'd like something musical with a full bottom end.

Thanks.