Rather than make a safe comment that doesn't speak poorly about one lighting setup over the other, I'll say this:
LED is still in its' infancy as to whether it can successfully color up and grow SPS corals long term. Many threads are started asking LED users to show their LED lit SPS tanks. In fact, they pop up weekly. They all start and end the same way. Someone shows a great tank with LED lighting, maybe gets a supporter or two, and then the pictures wain over time and become back and forth banter about different LED fixtures, photoperiods, loss of color, optics, spectrum of bulbs...etc. All the while, the pictures of successful tanks become further and further apart as the threads age. Do a search looking for SPS tanks using Radium bulbs and you'll notice a distinct difference...the pictures of successful tanks just keep on coming. Why is this? New technology usually makes the stuff of yesteryear obsolete. This however is not the case when halide is compared to LED running an SPS tank.
All things being equal, many like to say that it could be the flow, pests or some other parameter out of sync that may be causing problems, but don't dare point the finger at LED lighting because "it's here to stay". This is nonsense. There are so many hobbyists disappointed in their LED lighting results when in fact it is the only change they've made to their tanks when things started going wrong. Turning a blind eye would be negating your observational abilities to recognize the obvious. Recently, someone posted a picture of their LED tank under an expensive fixture after they'd stirred the sanded. The water was cloudy and you could clearly see the color variations within the individual beams of light far down in the tank. There was absolutely no color mixing like there is in a halide bulb or even dispersion from a reflected t5 setup. To me, this screams "stay away" because the same large coral could be receiving 3 or four unmixed spectrums of color on different parts of the colony.
Nobody wants to admit that their very expensive LED setup may not be worth keeping, yet the for sale forums are full of hardly used fixtures at discounted prices. Fortunately, I can afford any lighting setup I want, but I don't feel like tinkering with a new lighting technology to try and get it right when there's something so simple as plug and play metal halides. Sure, I spend more on electric and need a chiller in the summer, but the costs of running my setup pale in comparison to losing my SPS corals to something that should be so simple as lighting. The early adopters of any technology act as as guinea pigs for the rest of us. I personally feel that until LED lighting can mimic or exceed the growth, coloration and longterm success of SPS corals that it's not worth the investment at all. The technology is changing so rapidly. This, in itself is an indication that the manufacturers know they aren't there yet. After some calculating, I realized that the break even point of my tank replacing halide bulbs and electrical usage as opposed to going full LED was in the 7-8 year range...hardly worth the switch at all. I realize this is opinion, but I still haven't seen one SPS tank with its' primary lighting being LED that I would aspire to emulate.
Do yourself a favor. Stick with M80 ballasts, run your Radium bulbs and grow some wicked nice SPS corals. You can spend the difference on nice frags. Or, if you have the time to fiddle around and see if you can make it work, then maybe your pioneering spirit is drawn to LED's. Some hobbyists have made them work, but this is far from the norm.