The best lights on the market today are by Horticulture Lighting Group (in Canada too) and uses the latest generation Samsung diodes. These lights are nothing short of a revelation in indoor growing. They aren’t cheap but they are way less expensive to run and they outgrow anything except sunlight.
I went the d.i.y. route because I had access to aluminum for heatsink material (the most expensive part of the build) and that forced me in that direction.
Our lighting guru started this a couple of years ago. It’s long but filled with pearls of wisdom. Worth perusing.