hps mh

Looking to get a new ballast and light set up. First time using electric ballast. I my self prefer magnetic. But hey first time for everything. So which one is the better one, or can someone point me in a even better direction????? APOLLO VS iPOWER?????????

Currently I have two sets of the dual spectrum bulbs. I have heard of people using both spectrums at the same time, but I thought they were to be used at separate times, veg and flowering. Am I incorrect in this assumption? Also I have been looking into purchasing a HPS and MH setup in hopes...