I started my first aquarium in 2000 and shut down my 120 with two 400w halides and vhos in 2014. I just set up another tank 2 months ago and it took me 2 months to catch up with all the new technology. Dc return and skimmer pumps, The new apex and leds. When I took a break from the hobby leds still were not there.
I ended up going with three Red Sea 90’s and so far the light they make is very nice and the app that lets you control them from your phone is great. The shimmer is not bad but they do not give the shimmer effect as nice as my 400 halides did but the lack of heat and power consumption is a big positive. I used to run a 1 1/2 hp chiller non stop. I had shut down my last tank do to a move. For power consumption the old house was 1700 sqft, one ac and one story house. My power bill in the summer was $400-450 a month. The house I moved to is double the sqft, two story , two ac units and a pool. Power bill has never been over $325 and I moved two blocks from my old house. Since the new tank has been running my power bill has not changed. Time will tell on coral growth. I just got an order from WWC today. My main concern with leds are how well they are made. It does not matter how long led lights last if they are poorly built and the cooling fan quits on them and destroying the fixture but in theory they should pay for themselves by power savings and the cost of ushio bulb replacement every 10-12 months.
Old tank
New tank