well. that TOTALLY depends on application. the Q's are a SQL sub of sorts. the DO get louder than the SSD's, but not for watt. (from scott)the SSD's watt for watt are louder than the Q's...but when the SSD's run out of excursion, the Q's(excursion and extra power handling) get louder as an end result. if you want the most bump out of your ride with what amplifier you have. the SSD's are the way to go. if you can buy a beefy amp and want loud and good SQ..Q is your choice.
