BOSERO ive heard the BOSTONS tweeters and the COMPETITION seps , it will cost u an arm n a leg pero if ur serious , go for it . Di ko alam ang subs , recommend ko ay Kicker L7's or JL Audio's for subs and XTANT and JL Audio for amps . Bang for the buck kasi sila for the price they cost , so much features na wala sa iba na mas mahal and tested na ito sa competitions so that means , its ok to abuse these babies . ito ay for SPL application pala .