I haven't seen much talk about these so I figure I would ask the question. Are these good drivers, of course I am looking at the 18", but do these compare to JBL drivers or are they total crap because I am looking at replacing the driver in both of the subs I have. By the looks of it, they seem to be pretty powerful as well so I will probably upgrade the amp as well (I Would get a crown) considering they peak at 4800. Just want some opinions, Thanks