I’m running a MH FC-6500. Runs 730W max out and is a “recreational” light when used in a 5x5, and “commercial” when in a 4x4.
It’s made a huge difference and I can hang right at the top of my tent and still get the right PPFD to the canopy. I stopped moving my light and just dim it with a PPFD meter in play.
My 2c is no matter what you get get something overpowered as you can always dim a light but you need more lights to add it!
I just made some seeds with the Matt Berger bubba kush cut (originally from farmer joe by way of primo clones)using some Bubba pollen kindly provided by @barefrog. I was far more successful than expected and want give some out. I’ve made up five packs to send. So if anyone wants some let me know!