I like the dimensions of the Aqua Japan line and the quality for the price. The armored bottom seam and the external overflow are a big plus.
In my opinion, the Reefi blows the radion out of the water. I'm getting 325-400 par on my rock structure at only 55 watts. The Reefi is the Hellcat of lights. The fixtures are 270 watts each, so you will have more par than you need. The different lenses give you versatility. I'm running the 120-degree lenses to get as much overlapping spread as possible.
The overall build quality of the Reefi is top-notch. The power supplies are heavy bricks. The spectrum on the Reefi is fat. I haven't seen a person regret going with Reefi.
My Cor20 has been silent. The only time I've had a noise from it was when something got sucked up the intake. I put an intake screen on it to keep it clear. I'm running it at 50% with no issues. The power supply was replaced two years ago.