i think u mean subwoofers, they come in 12" and are made specifically for bass. as u can see in the threads----there is never the best" all we can give u are recommendations, they speak highly of adire brahmas, re x.xx and infinity id max. if money is not a problem i think u should go with re x.xx run for around 380 each,think, last thing i heard. if not try w7,s by jl audio. really really expensive but gotta love the sq (sound quality)