For LPS, zoas and softies, black box with at least 60% blue spectrum LEDs should work perfectly fine. At 30" deep, 90 degree lens should be able to penetrate all the way to the sand bed with a good PAR. Just be careful with 60 degree lenses, at full intensity you coral will vaporised

while you are doing your "saturday night fever" dance move due to disco effect. If budget permits, get a kessil so that you won't see a "I told you not to skimp with lighting" reply later on.
I'm a poor man reefer, I built my own LED light in my barn and I can proudly say "I do have a good working light that can grow wild acropora". Factory built light should be better than my barn lighting system. Those light from China surely works, they just being hated due to being cheap. Maybe some do have a bad reputation (being new in reefing arena) but several names has been around for quite sometime with a very good reviews. I owned SuporHydro 165W black box before and the next thing I know my kenya tree has grown 18 inches high in 8 months time.