People get all high and mighty, with “I use X light; Y light is crap and only good for veg” sorts of virtue signaling comments when it comes to lighting. I would never deny that LED light quality can vary a lot, but for past 3 years I have used King LED, Viparspectra, and now Phlizon LED lights (often shunned as “cheap Chinese lights”). My current lights- I bought 2 2000 watt natural sunlight design heat sink lights drawing 220w each from the wall (which is what matters the most, by far)- cost about $200 each. I previously used King LED 1500w (about $200), and a Viparspectra 600w (about $175), and the G8 red light (about $180). So, for my past few grows I used lights pulling a total of about 550 watts from the wall, and in my 4x4 tent, I pulled 17, 17, and 18oz of premium quality dense and super frosty buds. The point is, you do not need to spend $500-$1000 or more on a freaking LED light for good results. Don’t buy the hype; You can get good quality diodes and good wattage draw from the wall pretty cheap now. Wattage from the wall is what matters, if you want yield and dense, good quality buds.
More important? Genetics, genetics, genetics!