Well I got the bulb (400watter) from EZhydroshop.com for $62 & change shipped to my door. I got it running on the newest lumatek ballast I got from plantlightinghydroponics.com for $125, and I have it running in a Lumesun reflector.
As for the bulb, I think Lumatek made this bulb to run on their ballast on the superlumens channel. When it's running on SL, the light gets a little more white, and not so yellow, which is why I think it has such a high PAR rating. It's covering the full spectrum. Since it's running the full spectrum, I'm trying to veg my little ladies under it as well, let's see how it goes. When I bought the ballast, I figured Lumatek knows Lumatek, so why not cop the same brand bulb too...