I installed them at the end of August. About 4 1/2 months now and the softies are thriving. A few LPS do not seem to be doing quite as well, but they are adjusting.
How do your SPS do under them? I had SPS in my tank before with HIDs. They did fairly well, but with a narrow deep tank, I was always breaking them when woking in the tank.
I think the swaying trees are just a nice and a lot less finicky. Being able to adjust the blue in the 60W Crees brings out a lot of the blue/green tree coral color I couldn't get before.
I have recently added a couple of PAR38 LED bulbs to spot light coral deep in the tank, which give the illusion of rays of sunlight. (High Dimmable PAR38 White + Blue LED Aquarium Reef Corals Grow Light Bulb-{6x 16000K White 1 Watt- 6x 450 Blue (450 nm) 1 Watt-30 Degree Optics-Remote control to dim LED's individually.) You may want to give them a try if you had any dead lighting spots in your tank or have coral that need more PAR .