ATI are hard to get but well worth it in the end very nice light fixture. Keep in mind this will have to be hung on your ceiling unless you want to make a fixture of some kind. I really depends on what you plan to keep as far as corals if you want SPS i would go ATI but I hear you can do sps with those other lights but you may have to get something like 8 bulb on the other fixtures compared to a 4 bulb on the ATI