Like I told you in your other thread, have more patience, stick around here a while to at least learn a little bit, and then make your own educated choice rather than guessing someone else will give you the best suggestion. Even your question of what subs hit really really low suggests you dont know enough to ask a specific enough question. People who dont know much/anything about subs pretty much all suggest they want super low bass. That really doesnt tell us much, and you are mostly gonna get guesses and half-educated responses. I doubt any decently knowledgeable person here would take your question and simply respond with you need 'X' subwoofer. If they dont ask you to provide more info, you can be confident their answer is half-assed. If you are willing to take that chance with your purchase, by all means run out and buy subs in the next couple days based on what some strangers suggested would be best for 'really really low bass'.