Hey guys, I need some sub help for my 4Runner. I was thinking about two Shivas or ISDs from SVS. I am going to e-mail Erik at SVS to even see if I can buy one (I have already purchased a PCi). What do you guys think about these two? I think the Shiva can handle more power (600 max), but I'm more concerned about SQ and the ability to go low. They will be part of a full 5.1 DD system (SoundStream D'artagnan or DaVinci amplifier). Let me know what you guys think! Gotta buy one of them soon!