I thought I'd drop in and leave a review for the following ballast as it allows me to also enter a comp :)
I've had this for 3 years now, and it has been great. In my various environments, I have used 250w, 400w and 600w dual spec HPS bulbs. Even with the 250w bulbs I got dense flowers in a shit environment. The bulbs were all Omega Dual Spectrum.
I have yet to use the Super Lumens feature, mainly because I haven't bothered to find out what it does or what it means.
I have it hooked up to my Lumii basic reflector.
Would certainly recommend, although I have nothing to compare it against.
Peace
Wu