ola amigos.......i unfortunatly havent grown in a few years. something i am trying to change asap. when i was last doin my thing, your options were simple. hps or mh (floros too) and there was just regular ballasts yadda yadda yadda... now a days there are many more options that make chosing the best equipment complicated to say the least. i am hoping this thread will compile links and resources on the ever growing variety of lighting options available now and as well what is to come in the future. for starters does anyone have a link that could explain the differances/advantages between regular and digital ballasts? i have also seen leds which seem to be still in the early stages of use among growers. i would be interested in knowing more about them as well. any general info on the lighting side of growing would be beneficial to the community as a whole here on IC. im hoping this will turn into one of those threads saturated with helpful info and gratuitous links 
