I am prepping for a tank upgrade. My new tank is 36" wide and the kessils don't have that wide of coverage. I love the flicker the kessils have though.
They did pretty well. I didn't have too much. There are a lot of reviews of people who have corals with kessils. They are good lights but honestly not the best for SPS, from what ive read. But then again some people have done ok with sps. MH is the best but a lot more power usage. Its all up to what you want to do.