Well, for all those frustrated with Radions, there's this option:
I just received two ReeFi LED lights for testing purposes. This company has been around for a while, but it is new to me, and I'm impressed with the thoughtful design. There are 72 LEDs in the array including cool white, warm white, amber, lime, blue, royal blue, violet, 420nm and 400nm, each on...
www.reef2reef.com
Very solid build quality, cheaper than an XR30 with every bit as much wattage, and near silent fan. Yes they are "puck" style, rather than panel, but because the output is so high, you can raise them high above the tank to get good, even coverage, and I can't detect any "disco ball" separation effect. Did I mention the lack of side glare? Oh, and since I've installed them to replace a Radion (G4) / T5 combo, I've seen a 30% uptick in alkalinity consumption and visibly increased growth.