It really depends on what you have in your tank, if it's a reef you will need some powerful LEDs but if it's just a community tank what ever lights the tank will really do.
I had MT until a few months ago when I changed over to a full programmable led
system and honestly it took about a month for the corals to be themselves again but now I'm seeing growth like never before. But that's hard to determine what exactly is causing it. It could just be the photoperiod that's programmed... I currently have the lunar cycle programmed which was a pretty cool option!
Also depending on what corals you have. Is your tank full of sps
Each tank is different and just from my experience in 5 tanks over 20 years each ecosystem was running a little different to what was in the water.