I've been running the black boxes the longest and the Chinese are finally listening to us about controllability. I've only had a sporadic fan failure on those and they're easy to replace.
As for my favorite? It's a toss up between the Ethereal and the Hydras. Hydras are easier to program, their app is a lot easier to use, the Ethereal app is terrible when it decides to connect and allow you to program. My ritteri anemone LOVES the Ethereal, it hasn't moved and I think I have it at 90% for 2h at 10K for noon day sun. The Hydras seem to be growing corals better than the black boxes, but with 14 1m x 3m coral runs it gets expensive quickly to fit 14 runs with 2 Hydras each even at wholesale prices.
As for the DSunY units, all I can say is if you buy them you better hope you don't have an issue, their customer service after the sale with a problem is terrible. I've been running the DSunY units about 3 years and the LEDs are starting to go out. If they had a simple ramp up and ramp down timer they would be much better.
I do have a custom hi bay fixture on order with a customer that does nothing but lighting. It will be a single puck at 100w and 10,000k for my one concrete vat that is being used to try to breed tangs.