I don't keep a reef aquarium to save money on bulb replacement and energy bills. I have yet to see a top notch SPS tank with LEDs that can compare to a Radium lit MH tank. So, what's most important to you, the best possible looking tank or still having a great looking tank and saving some money in the long run? I also think T5's are ultimately going to show off corals better than an LED set-up, so possibly a happy medium there.