I recently bought a bunch of bulbs for over my tank. The order included 2 x 48" ATI B+ T5s, 2 x 250w Radiums, and a 150x Phoenix 14K DE bulb. I had a very special shipping request and a guy named Crash at www.soslightbulbs.com was awesome. He took great care of me. And beside that, they have the best prices on these bulbs that I was able to find at the time.
I would encourage anyone still running halides to check this site out when you need to replace them.
http://www.soslightbulbs.com/
Bruce