Unless your youtube followers are paying for your lighting you use what you believe is best based on your research. You have a lot of choices at varying degrees of dollars. Judging by what you are considering you are close to 2k in lighting alone...
Lighting is a lot like other bits of equipment in this hobby such that hobbyists are loyal, biased, and opinionated

I am although I try and remove that hat and answer or explain my reason. In this case I'm a bit biased towards Kessil. I like the a360x form factor. I like the company. I like their history. The lights work well. Most unbiased reviews show great results across the spectrums I like. Great support. I had to return one due to a flicker. Over night a new one to me - can't beat that.
I do not own any Ecotech products. I originally was planning on using their return pumps but at that time they released their new pumps and they had some serious quality issues. To their credit they did a redesign and stood by it and took care of hobbyists. Also well after too. Looks like they have good support. However enter the new lights and the initial reviews showed cracking and fan noises. Again, good with support they took care of that. However, I can't get past back to back launch troubles - just my thing and nothing against them.
I think at the end of the day it is this. What is it you want and are you going to change any of the spectrums? Both will grow corals. Both have a proven record. Both are expensive. Other lighting may be an option and cheaper or even more expensive if you go with the new Coral Care Philips. Again, biased hat off both are good products. Both will grow coral.
Only thing I can think of is visual installation and mounting. Look at that and see if one is better than the other and maybe that will seal the deal. But I don't think you will go wrong with either.