You know, I have T5's and love 'em. They last, are affordable to purchase and build a tank around,do not generate a lot of heat,you can keep and grow darn near anything in the ocean, and they create a very nice lighting effect on the tank. Oh yeah, and energy efficient to boot.
Why doesn't the entire hobby put down their power compacts (replace every 6 months and are expensive), metal halides (Require a lot of power, are very expensive and degrade quickly in comparison, Ohh and generate a ton of heat) and Led
's (New technology costing a ton of money to impliment effectively)
The T5 is the perfect lamp and fixture. a 4 barrell 54 watter (48in) with bulbs can be had for $200. Talk about making a reef tank affordable to set up. It's the light that keeps everyone from taking the step because they are so darn expensive to purchase up front.