I had only flowered under 1000w hortilux HPS. Then 2k. Veg was T5 then 400w Hps. Got a mh conversion bulb for veg. It was better. Recently got a SF-2000 QB for veg. It is doing even better, but it seems the light amount/density is lower. Probably need another one, or HLG 135?
I used a 1k HPS and a 1k MH conversion bulb to flower. Both hortilux. And I rotated them every week. Mixed feelings. Seem to get bigger flowers with HPS, but this quality is better than just HPS. Tastier,frostier,tighter,and plants looked better.
I have a buddy who is all blurples. His buds are fluffy, but good stuff. I have a buddy that is all CMH. He was Blurples. He loves it. Buds are tight and frosty. I knew a guy that went from blurple to SE HPS to DE HPS and he said it kills.
Idk about QB for flower, but I may find out this summer. It seems like LED is good, but you have to pack so many lights over it, that you spend a lot more than an HID set up. But the heat is a real issue. I use HID to heat my room overnight in winter. And my LED QB veg is having no issue with the heat from it.