There's no getting around the fact a high end LED can put out the exact same PPFD, with a great spectrum, as any HID while using half the electricity if you account for extra ventilating needed for HID.
You can get an LED that will grow the same quality, and size bud, pay some extra $ up front for your light, and have it pay itself off in 2 years on the difference in the electric bill alone.
I for one, upgraded from my 1000w HPS to 850 w of SF LED and I am blasting my girls with way more light than my 1000 could ever get close to putting out.
And a better light distribution on the canopy too