the real point to LED that makes it worth it is if you are running a closed room and have heat issues.
Using LEDS will allow you to run less cooling, which is a huge benefit.
Imagine someone spending lots of money on air conditioning for their CO2 dialed in room
The HPS is putting off way more heat than LEDS, if this isnt easily overcome then using LEDS would help alot, reducing a ton of cost on cooling equipment
Leds help offset the cost of cooling equipment. If you are somewhere in the middle and need some heat, you can do a mixture.
Alot of growers here use CMH+ LED