Yes, there are sum LED's out on the market now, boasting the lumen intensity or, at least the equiv output of 800W HPS, however, the last, latest one I looked at, not only has a veg mode, which is higher in the blue and white spectrum needed, but it also has a flower mode, with more red and yellow, with the flip of a switch, and also UVB spectrum on/off switch, to use during flowering... If I didn't get all my HID's for free, leftover on certain electrical jobs Im on, I'd probably invest in one, and still may... I believe one is called the SolarStorm, made by California Lightworks, that looks badass... and another one is the UFO, which was the less-powerful precursor to the SolarStorm... Id sure be willing to give it a try... But, I prefer, as my plants do also, a full spectrum, meaning I use different amounts of BOTH MH AND HPS for the entire grow, start to finish...