It's probably best u try and hear some setups OP..or just buy something u like, and set it up correctly. You can't go wrong with a lot of subs as long as the install is up to par.
Everyone online will claim they have heard everything and know every sub and how you can get SO MUCH LOUDER With their favorite brand, when, in actuality they know nothing more than what they read online, their system sounds like hot garbage, and they don't know what a good system sounds like.
And for all the idiots who like to pass around the "Kickers ****, they sound like a fart" BS, show me how much louder you are than numerous correctly installed Kicker setups, show me how youve won SQ comps because Kicker can claim both, with the ever so hated L7s.
Stop passing on what you hear online as fact.