Hi,
The ushio is what is packaged on the web, but they are web packages only, so you can configure it any way you want. Different brand bulb, dual ballast, etc. We just put them in packages for easy ordering, but the prices are the same if you get separate items.
So i would recommend getting all separate items online and making your system exactly how you want it. So you could get a Dual PFO hqi ballast, 2 mini pendants, then choice of your DE bulbs.
Now we do recommend Ushio, AB, Geissman, or Aquaconnect German made lamps because of there reliability and 1 year pro rated warranty, but the china type bulbs, XM and Coralvue can make a good alternative when on a budget.
thanks
jason