I AM BUYING A HIFONICS 2600 WATT MONOBLOCK AMP, AND I WAS WONDERING WHICH ONE POUNDS HARDER AND WOULD FLEX MY CAR MORE AND WHICH ONE IS MORE DURABLE? THE ORION HCCA 15 OR FI BTL 15? ALSO IVE HEARD RUMORS OF PEOPLE BLOWING ORIONS WITH PORTED BOXES BUT I DONT KNOW CUZ THEY ARE COMPETITION SUBS...