In my car I have 2 12" MTX8000 subs and they hit hard...i've always liked MTX and some of their new products are badass. I am pushing them with 2 500w Boss amps that arent the best in the world but they do. I also have a pioneer deh-p8500mp head unit that pushes my highs great and sounds great. I have 2 sets of polk components and they sound awesome...This is the combination i have and it works well together.