What are the best subs out there to pair with my MTX jackhammer JH600 amp (600w RMS @ 2 ohms)? I would like as much output as possible, but dont really want all low end like the Kicker L5 I had. Need something 600-1000w RMS, and under $1000. Is the JL 13W6 a good choice? I prefer one 12+" sub, but I'm open to 2 10's or something.