if you want to stay with kicker, and do not want to unload a ton of money to beef up the electrical system and get the big wattage amplifers, look at the L7, they can get more than loud enough for most needs, and they do not require the power of the SOLOX, no they will not score as well on the SPL meter as the SOLOX but you have not shown interest in competing, also look into the PowerBass XS subs, decently priced with tremendous output you have to consider a few things, wattage needed, cone surface advantage and usable space for the box if you want to beat what your friends have... (keeping in mind the EVO does not have a large trunk something along the lines of 2 12's might be a good place to start) if you want to spend a few more dollars, talk to Nick Lemons with Stereo Integrity, the MAG D2 has the ability to get very loud in the right enclosure with enough power and still keep its composure with sound quality {both powerbass and stereoIntegrity have forums on here} I hope that helps a little..