Which is the best audio system for my Car, whether it should be a JBL b tube?

a tube those dont give you b you cant be a b freak with a tube. You need 2 subs in a ported box. i suggest you get 2 mtx 9500 that will tear your car, or you can also go with 1 jl audio w7 if you dont want to waist that much money. subs are going to be the best for you if your a b freak.