Hi all. I have a question. I'm about to buy an Inifiniti J30 with the Bose factory system. Something like 200W through 6 speakers. I heard it briefly and it sounded decent and some friends of mine told me they've heard it and it sounds good. Now, I want to add a sub to it cause I think the Bose factory speakers are fine (for now, anyway). I was wondering if you had any suggestions on a good set-up for around $400. I listen to mostly rap, but I do listen to some rock and other stuff, too. But the primary reason for me getting the sub is for rap. I don't want the bass to be too loose and make that annoying rattling sound from the trunk. Any suggestions? I don't care if it's a 1 or 2 sub system. Let me know what you all think. I appreciate any help you can give me.