So I've decided that I'm going to purchase a 400w magnetic ballast for my upcoming grow. The reason for magnetic is because of digital ballasts having a chance of giving off RF interference, messing (my) neighbors cable/internet connection, and having the cable company knocking on my door. The thing is, I don't know much about magnetic ballasts. Could someone point me in the right direction and give me any tips on them.. I'd really appreciate it, thanks!