I'm about to pick up two 12" max st lanzars for 100 bucks in a box. I don't know much about lanzar subs but I know they make awesome opti drive amps. Are these the mid range subs, low range, or middle of the road? I heard them and they sound all right but they were on a shitty crunch amp so I don't know what kind of punishment they can take. I've also seen some square ones around town - any opinions?