this is prolly gonna start a shit storm..but before it does...ill give my honest opinion...theyre a good sub and ive never had a problem with them holding up.. and quite a few people run them u just didnt look very hard lol... only down fall of them is their stiff ass suspension requires they be put into a larger enclosure than normal.. this same suspension also allows them to be tuned higher and still go low so its a bit of a catch 22.. but theyre good subs and great CS behind them