Hey Vexor,
I don't know if buying a light directly from China is something that interest you, but that's what I did. I did a bunch of research on replacing my 1000 watt HPS light with LED and decided to go with a Meijiu A8 650watt light bar from Alibaba.
Meijiu A8 650w Samsung Lm301h Horticulture Red Led Grow Light Waterproof Etl Dlc Lm301b Grow Lights 1000w 1200w - Buy Samsung Lm301h,Lm301b Grow Lights 1000w 1200w,650w Grow Light Product on Alibaba.com
www.alibaba.com
I got this light shipped for $650 USD. (I think its a little less now.) There are some cons to buying a light from Alibaba. If something goes wrong with the light, you would have to pay shipping to get it replaced and that's a couple hundred. So if customer service is a big priority, I probably wouldn't go with a light from China.
Also they have a newer version...F8 more diodes, even more spread. Like $200 more.
I use the light in a 4x5 space and I really pack the plants in and so far I can tell this light is holding its own with my old bulbs. I think it would flower a 5x5 as well, but I don't have a light meter so I don't know for sure. I know the F8 would. I'm getting ready to purchase the F8 for the second half of my flower room.
Cant attest to potency or yield yet as this is still my first grow with the new light. But my ladies are FROSTY at 5 weeks flower, so I'm happy so far.
Anyways something to think about...good luck in your search!
View attachment 1086857
View attachment 1086858