What ballast should I get? 400w mh w/20k xm bulbs...

[wolmutt]

I'm going to buy a 400w mh halide ballast for a 20k xm bulb on a luminarc. What is the best ballast?

thanks!

[epidemic]

IMO id use a mag coil ballast. It uses a little more electricity than an e-ballast, but you getmore light and with a 20K bulb, it will look less blue and more realistic for picture taking. Those ballasts will also live much longer then an e-ballast. just my opinion.