It is. I have 3070s, 2530s and vero18s running between 5-700ma. No reason to spend $50+ on a small increase in efficiency IMO. The $3 a month it saves me on electricity won't cover the upfront costs lol. Plus I can replace without thinking about it every time new arrays come out. Which I don't think would be the same if I paid for the 3590s.
I'm not against efficiency, but I'm not sure there would be a noticeable difference in efficiency.
No one is hating on them l, just there are cheaper/better options at 500ma without sacrificing much if any efficiency. Vero 18s are $10. Cxb2530s are $9.20. Google cxb efficiency in images and it'll link you to the thread with all of them.
He can run 3 of the vero18s on each driver which would actually put out more light than 1 72v 3590. And would cost about the same for 9 of them as 1.5 of the 3590s, plus the driver would be pretty much maxed out and get its best efficiency.
Where are you finding the Cxb for $9.20? Prices I'm seeing are ~$20 each when ordering <20. How about source for Vero18's too
Cutter.com/au @welight can tel you if they still have them for that price. Was for the 3000k high cri 2530s. Vero 18s are $11 now on digikey though so I would probably go that route. I'm currently using the v22s. More efficient than the Vero 18s, almost on par with the 3070s and Vero 29s for $15.