We havent got any feedback on them yet,but they are evenly priced with there compitition.I have heard some neg about the lumatec,but mostly with the older ones.
I figure I will throw my experiance in with My Galaxy ballasts. I have 2 600's, and they also make a dual 600. Nice thing about them over some of the others is besides being able to run HPS or MH conversions to swith between 120/240 all you have to do is switch the cord. I like them, and haven't had any issues. Bout the same price as the lumetec.
the galaxys cost a lil cheaper then lumateks and they look almost the same just different colors, i bought mine off ebay in package deals 650 for each hole set up