I can either buy a reconed Ev-18 (oem) $110, or a used Black Widow $140. I'm aware of the air space conflicts of changing speakers, but i've heard that recones never sound the same. I'm told the EV is top notch, but w/ a 400+ and a 6x10, it was not all that impressive (the speaker just seemed warn out, which it looked). What should I do? Also, it was recomended I get a dedicated power amp just to run the 18, could a 400+ not be properly powering this cab? Also, would a crossover run to the 18 be worth a try as well?