I was at Big A'ls yesterday and Andrew demonstrated Current USA led freshwater lights that they just started carrying. Sure wish they where around before I bought the Marineland double brights. RBG plus 6500k super bright whites. Can do many effects including lightening, cloud cover, dusk and all with a remote control. 48" was $168.00 I believe. The company will be making the same thing for reef aquariums soon too. At this price I think many will be making the change to led.
Here is the link. They are the same company that makes the tru- lumen lights
www.current-usa.com/aquarium-led-lights/satellite-freshwater-led-plus.
Cheers Mike