I have the new mars hydro fc-e 3000 wich was ordered factory direct like 3 days after release and was lucky enough to get one into the states.
All I can do far is it’s my first grow light. But I did a lot research before buying it was about 300 us.
Has 4 light bars aluminum with very thick heat sinks. And they do work heat is minimal off the top. Even with the driver mounted on the back of it.
Each Light bar is individual adjustable on a track so you can distribute light based on your needs.
You could put all 4 right next to each other if you wanted to.
Overall I will prop be ordering a second one it claims to support a 4x4 and a 3x3 bloom but prop more like 3x3 veg 2x2 bloom but we shall see in 8 more weeks.