ive built a couple hlg qb setups that each pull 920w on 120v with 12x qb288v2 @ 1400ma, and I have a couple spydrx+
nothing against the qbs but my next 64 lights are going to be all the new spydrx 2i (the 1700ppf one) for a few reasons
1. no building involved, ease of install, ready to hang.
2. "tuned" spectrum vs single all white diode
3. form factor with the hinge in the middle is appealing
4. one time I was away and my ladies grew into my lights, spydr's are fine, qb's are fucked (shouldn't happen again but makes me wonder about foliar sprays vs qbs)
5. closer deployment to the canopy ( don't have much height to work with)
6. its not that much more expensive than building a light (parts only), and when you factor in the amount of hours it takes to plan, measure, drill, mount, wire, etc, even if you paid yourself minimum wage this cost adds up quick because especially if its your first time planning/building something its going to take a while
if I were to build some more lights I'd probably use chilled because I am interested in their spectrum