600w Lights

I'm looking @ purchasing 2x 600w lights.

I currently have one 600w with a magnetic ballast and it's in a Sun Systems I believe XL Horizontal hood (it's an older one).

I am looking at purchasing 2 more 600w lights and I'm looking @ htgsupply.com and they have quite a few options and I'm not sure of the quality of their products.

Has anyone used their EasyCool 6 hoods? I'm thinking about getting the package with 2x 600w Digital Greenhouse Ballasts and 2x Easy Cool 6 Hoods.

http://www.htgsupply.com/viewoption.asp?ID=377

Are these ballasts any good? Should I just spring the extra $100ea and get the Lumatek Ballasts?

The other option is of course to go to the hydro store and spend $500/ea on Sun Systems hoods and their digital ballasts, but I'm just not convinced there will be much difference if any.

Experiences anyone?

I just purchased 2x 600w Digital greenhouse ballasts with easy cool 6's. Right now I only have one going with a 424 cfm vortex pulling through it. Temps are 77-80 about 8" from the glass on the hood. I imagine this will go up once I am running both with the carbon filter attached. I have only owned them for less than a week so that's about all the insight I have on them.