i have an extended cab truck with a jl 12w3v2 dvc sub @300wrms with a fosgate p3002 bridged to give me @368w to the sub. im happy with the results its just that im wondering if a 500 watt 15" sub would give me better bass with my 300 watt amp than a 300 watt 12" maxed out? the 15" im looking at is a jl 15w3v2 dvc. any comments would be appreciated.