Subs i wouldn't hesitate to run in my car are Skar vvx, DD(Digital Designs) anything, Fi, Tc sounds epic, Dc audio , Image dynamics IDQ or IDmax, JLW7,Db drive. These are just some of the ones i have personally heard and sounded great. Just depends or your application/music you listen to. I am currently running 2 DD3512 tuned to 30hz in 3.8 cub box. How much power you planning on running? Are you looking for Sound quality or SPL? What kinda music do you listen to? and how much room are you willing to lose in your trunk? Sorry for all the questions but they will help to narrow your search very quickly.
