Blackbird is tits, going into my third run in a 4x4 with it.
That being said, the Tomahawk bar style probably has better light distribution than the panel style, and I will probably get their next version of it in a couple years, or a Migro.
As for UV and IR, LED’s that produce the spectrum of IR/UV plants use are almost non existent last I checked. I’m sure people get something from them, but I’m waiting for better science before I dick around with them.
I have one complaint, and it’s a stupid complaint. The light is too even. The spread is too good. Before if I had a slightly taller plant I’d just stick it in the corner for lower light intensity but now I can’t do that.
I’d encourage you to do your own research but I really like mine.