The type of music shouldn’t matter too much, in terms of subwoofer size, as long as your enclosure is designed well and built solid. I’m a metal listener primarily with some rap mixed in, and I have done 8s 10s 12s and 15s, and the size of the sub didn’t make a difference. I liked the 15s I’ve ran playing metal, and the 8s pounded rap just as good as the 15s. The 8s didn’t sound “tighter” than the 15, no matter how many times people have argued with me about it. Quality subs of any size will reproduce music correctly in the right enclosure.