From my experience, my aq 10 was at least 10 dbs louder than my friends jl w0 10. Plus, he blew his sub every few weeks.and it ,the jl sounded horrid. Just my 2 cents, but I would put 1 hdc 10 against 4 of those jl zeros and probably win in all categories. My aq 15 was insane as well. Hope this...