My biggest concern with HID lighting, is a bulb failure while I'm not home to catch it. Nowadays it's less likely for the bulb to explode, but it still happens & that can literally burn your house down.
LED, more than anything, are just worry-proof. If they fail, they're not going to rain molten hot pieces of glass, ceramic or metal bits onto your plants.
All worries aside, I personally loved the growth rate under CMH lighting over LED, but I will still always choose LED over anything. The tech is already amazing & continues to get better & cheaper by the day.