I can not speak for anything other than the Icecap LED's:
I have 2x 46"(approx) IceCap LED's on my tank(48" Long 120 Gl).
If the MH Lights(2x 250w 14k) are on, the LED's are not visible, and seem to do nothing.
Without the MH's in my sunlit Living room, the LED's are barely visible from far away, but up close the tank has a blue coloring(This means, the sand is Blue, the tank is slightly lit, and the coral color is more dramatic).
Even If I just have my 2x 54w actinic on, the LED's are not visible
At Night, with the apt dark, and LED's on, the tank looks Great! The LED's are very powerful, and it all looks amazing.
IMO, LED's are overpowered by MH lighting, and are only useful when all other lighting is off.
As I stated above, I only have experience with my setup, which contains 2x 250w 14 k MH, 2x 54w Actinic, and 2x 46" IceCap LED