I have had very good experience with HTG Supply. I am using thier 400 watt grow lights with MH conversion bulbs. No you don't get the "fancy" new magnetic ballasts, but they are still working the bugs out of those anyway. The ballast is well constructed, and with the 10ft lamp cord, I have the ballasts outside the grow room. I also was not happy with a pair of defective light hangers, they sent a new set immediately, didnt even want the other pair back.