I have considered the reef spectrum P 47 or upgrading my MH from 150watt to 250watt. Not sure what to do. LEDs are finally were I feel they can produce the spectrums needed to grow corals not just make them look pretty. Not all LEDs are created equal ether so buyer be ware.
If your thinking of switching the type of light you use, find out if there are other hobbyists in your area running the type of light your considering. Nothing beats seeing the light for yourself.
I'm getting the same growth and color with my DIY LED as I did with a 400watt MH and 20K bulb. I have a 30" deep 210 and have SPS all the way to the bottom.
IMO anyone who says you cant have a great SPS tank without a MH / T-5 combo is closed minded.