I have been PM'ing off and on about various questions relating to these lights, and figured I would post here so anyone else with similar questions can see the answers First of all, I have a 90 gallon tank I am in the process of building, and have decided that I am going the LED route, and plan on buying from Reef Breeders (the value + not having to put it together myself... everything on my build is taking forever and I don't want to worry about the time to put something together AFTER the time it's going to take to get enough money for everything in my build). I have already found out that I can special order the correct driver for Reef Angel dimming (who knows, maybe by the time my build is far enough, they'll carry these drivers ;D). However, I have two more questions. I am comparing the 120 watt value fixtures to each other. Is the cree worth the extra $100 per fixture (planning 2 on my 90)? Also, with the depth of the 90, what optics would be ideal? My canopy is somewhere around a foot and a half to two feet tall I believe (can measure for sure tonight...). Edit: Also, I am sticking with mostly LPS and softies. But I don't want to limit myself, and also would like to keep clams. Thanks!