What is your favorite 250 Watt DE 20K bulb?

[Kurt448]

Hey all, I've got a shallow (12") tank with 2 250 Watt DE's on an icecap ballast. I currently am running it with phoenix bulbs but have been pretty unimpressed with the fluorescing of the corals. So...as the title asks, which bulb would your recommend?

[gcarroll]

I'm using the new 20K from Ushio. It is the same as the BLV Nepturion line in Europe. I converted from using Phoenix bulbs