[Racefan]

The 600 HPS is the most efficient HID made to date. More lumens per amps used compared to any other HID. I would use the 600 myself. The penetration one would get from it would outweight the ability to move the floros around. Plus...going off my own grows...lights rarely get moved around in the middle of a grow except to raise or lower them. Of course everything is dependant upon how well you can control the enviroment.