Well, my stock Monsoon system in my Jetta sounds great as it is, so all I am going to do is add a sub for a little more low end.. I'm planning on getting one Image Dynamics sub and a small sealed enclosure. Trouble is, which ID sub, the ID12, or the IDQ12? IDQ12 is a few more dollars and can be put into a smaller enclosure, but requires more minimum wattage. I was planning on using my JBL GTO 75.4 amp (rear channels can be bridged to 284wats RMS @ 4ohms x2) What would you suggest??