When I was deciding between SAM and LED lights I asked several people in pool business which was better. I was told that the LEDs are not as bright as the SAM lights but they were expected to last longer. I don't know if anything has changed regarding LED brightness in the last year. I went with the SAMs (two in pool) and a SAL in the spa. I very pleased with the results. With two or more they do a "color swim" program (through my IntelliTouch controller). I have a white finish which really reflects the light. If you have a darker finish make sure you have enough lighting or the colors will be dull.
The SAM lights put out an equivalent 300W lighting (according to their brochure). The best LEDs (I could find) where equivalent to 150W.
Good luck