I have two of these GroBeam 500s on my big tank. They are 6500K white which is what you want for plants.
http://www.americanaquariumproducts.com/LEDLights.html
I also have the controller that simulates lightning!
It's also a timer. Oh, and it can also simulate sunrise/sunset.
I don't know what your price point is. It is hard to find good LED lights for freshwater. For my small Edge tank I ended up going with an Ecoxotic Stunner Strip that is 8500K white/453nm blue. I don't like the blue lights. They are for reef tanks and just grow algae in freshwater. It's making food for my snail, and my plants, except for my Anubias, aren't doing so hot. I put the GroBeam on that tank one day and my plants went nuts. It heats up that little tank too much though so I couldn't use it forever.