I got one two in black Friday sale, to replace the older version of nanobox duo (2 channel). So far I like it with some frustrations. And it's surely an upgrade to nanobox.
For the light, my corals definitively like the Maxspect Ethereal better. days after switch they already started color up like never before. Light seems more spread, par go from 200 on the middle of sand bed, 20" down, to 350 on top of rock work, 9" down.
I also love the control of 5 channels, especially the presets. I'm running on a custom based off #2. The color of preset is surprisingly good. It saved me lots of headache at finding the perfect color combo.
The mount is awesome, especially after the long suffering from nanobox's ****** gooseneck. But for me it's a bit unfortunate with its limited angle. My tank is 30" x 18". I want to put it in the middle, high enough to cover the full width. However, in order to have it sit in the middle from front to back, it has to be in the lowest position. And in that position, it can only cover to about 24" width. If I put it high enough to cover the width, it will need to go so forward that the front edge of the light is reaching the front of the tank, and the back of the tank, where the major rock with is, will not have enough light. So I end up buying a Kessil A80 to cover the other 6" width. (And their shapes look pretty harmony next to each other =P )
The major headache from it it's its app. For one, the initial connection is slow. Every time I launch the app it takes quite some time to find the controller. Secondly, the custom settings are not stored in the light, but it's in your app, means if I won't see them if use another devices. I found that out when trying the app on my iPad, wiped my schedules, and having to set it again from my phone. Since then, I deleted the app from all my devices except my phone. Do not expect it to work nice with more than one control app installations.
On the plus side of the software, unlimited sections of time in lighting schedule is so great. In comparison, NanoboxC's bluefish only has 4 sections is very limited in what you can do. The preset is a good example that slowly turn the color towards the color of ATI blue plus, then turning it down for the day, really shows me a different perspective of my tank.
One feature I do miss a lot from nanobox if the moon phrase function from the bluefish controller. Ethereal's ambient light is very capable moonlight, but it has no scheduling control at all. I can only set it to a set value. I would hope they will add moon phrase to the controller in the future.
Basically, this light a package of awesome hardware with suboptimal software. The good thing is, software can be easily updated. But on the other hand, it might never get significant update. But overall, I still like it the best, among the other lights that I have (nanobox duo, Kessil A160).