The new mars stuff looks pretty good. And dont let thin boards worry you. Most of the boards are pretty thin. And they are more in keeping with the newer style LED.
If i were not loaded with lights i would buy one to give it a go.
They will all grow cannabis...thats a fact...some just get you more at the end of the cycle.
If you have a 3 x 3 space get a 315 CMH and give it ago. Pretty great bang for the buck right there but it fits better in a square shape.
I ordered some boards from Meijiu and they work really well too. They were 180USD for 240 watts of 3k samsung with 660nm far reds. 22 dollars canadian duty when it got here but a really good value. If you are tight for cash they have the boards.