I’ve mentioned this in other threads, but I run two SF2000s instead of a single SF4000 in a 5x5 tent. They produce the same amount of light but I can spread them apart for better coverage around the outside and also run them at different heights when the canopy isn’t even. There’s also the thought that if one light dies, you’d at least have the other to limp along until you repair or replace the broken one instead of having an emergency where your plants were potentially plunged into darkness for days.
I haven’t completed a harvest with these lights - probably have a month to go - but I’m extremely happy with the purchase.