In my limited experience, I've found high output Fluorescent lights to work the best for daytime lighting, especially since you can tune the light spectrum to the needs of your tank and/or plants. Plus, I think the LEDs are a lot more expensive still, in terms of output/dollar. I do use LEDs, though, for my blue night lights for the tank and they work great.
Just my 2 cents ...
All the best !!!
