i know someone who's got an VIBE active 12 sub and box and it is brilliant, he would recomend it to anyone and is the best for the money in my honest oppinion.
the jbl 6x9's are fcuking sh*t so wouldnt pay for one of the subs
alpine are very good on all the gear especially headunits
and JL audio subs are felt better if you stand by the car rather than if your in the car, sounds odd i know but is true.