I run 600... $40-45 a month added onto your already high bill really sucks... Makes me wanna do solar.
i agree 600w hps as your flowering light. Also just something to keep in mind when shopping, you want a reflector thats air cool, if you live anywhere where its already warm-hot, you need an air cooled reflector. The other thing to look at is the coverage area of a reflector, then compare it to the actual size of the reflector, ive seen some retailers claim 4'x'4 coverage but the fixture is only like 18 inches wide. Their getting four x four coverage but thats with the fixture 5 feet above the canopy. Amazon has some decent ones ( by decent i mean wont burn down your house), i personally run an ipower 600w, comes with an hps and MH buld. Plus you get hangers. for like $200. I dont know that much about that brand but the ballast seems really nice. Visually... (i dont know that much about magnetic vs digital ballast, think the newer digital ones were burning thru bulbs faster... But the magnetic ballast cost a good bit more... Good luck