Light upgrade .. which Hortilux 250w ?

hi all, atm im using sunmaster 250w dual spectrum & i want to upgrade my light after seeing results online and reading about hortilux... but they have so many models ... blue ? super hps ?
could one recommend best hortilux bulbs for 250w setup? i dont mind buying 2 and changing for veg/flower if i get better results.. (no need in sunmaster)

thanks .