bghydrodotcom
I, personally buy the ballast kits...a ballast box and the hortilux 1000hps...or, they have their own light systems now, and I wouldn't hesitate to buy them...

another option is ebay...seedstarting>growlights is your search...people are always selling raw ballasts and used 1000w lamps...also; I would not shy away from a great deal on 1000w MH either...that is why I have 2

regardless of peoples opinions; There is nothing wrong with a MH for flower...1000watts is 1000watts. the only thing is, the MH has about 30,000 lumens output, than an hps...but keep in mind...that is still alot more than 400w...
and they make great MH bulbs with enhanced red spectrum.

And God forbid, you could afford, The Hortilux Blue 1000w MH bulb...that is the shit...alot say better than the 1000w horti hps...but It costs $200 bucks... so, I still don't have one. lw