There's no perfect sub, there are many good ones on the market, each catering to different customer seeking different output. For instance, the last sub I had was an Incriminator Audio Flatlyne 18". Only 750wrms, but it's more efficient than this other driver with 2000wrms. That allows me to not have to run as much power to be loud. And that was also the cleanest, softest bass I've ever had. So many different and good subs out there, that were designed to cater to each different customer's needs.