Need some advise oncamera lightning
 

I need some advise about oncamera lightning.

I'm using two XL2 camera's for weddings but still missing some lights.

Although i can should allmost everything the lightning is getting more and more important. My questions is ( i mis the lighting nowledge ) wich one will fit my needs and equipments.

I have looked to the Frezzi but still missing the nowledge wich one should be the best.

Thanks.