anyone used LEDs for vegging?

i just recently got my new 90w led ufo and its pretty fucking cool. can anyone tell me how well they work for vegging? obviously ive done my research and nobody has really seemed to succesfully grow good with leds they only seem to work well for vegging. That being said i needed a veg light for one of my grow boxes and i decided to go with the led ufo. so anyones experiences with led ufos in comparison with fluoro/hps/mh/etc.?

bump no ones used leds?

i have never used them

well so far my seedlings jus sprouted about a day ago and are already an inch tall under the leds they seem to be growing nicely.