5x5 tent - try out 2 HLG 320XLs, run ya about 900-1000$
Or one 1000 watt setup that includes cooled hood, dimmable ballast, MH and HPS bulbs, timer and hangers for under $200.
I'm actually glad so many people are spending so much for expensive LED's because the price of HID systems have plummeted. Both will grow excellent weed. But one costs much more. But if I lived in a place with expensive power I would take a serious look at LED's. With the power so cheap where I live it would take years to recover the extra cost of the LED's through power savings.
Not slamming LED's, it's just that HID will and has been growing weed just as good or better than weed grown under modern LED's. People have been growing fire under HID's for decades. Can you grow fire under LED's? Yes you can. But the extra cost just doesn't pencil out for many of us.
There is no "One size fits all" answer to "what's the best light".