Another vote for Dual Daylight (6.7K and 10K). I think it's a very pleasing combination to the eye. However, I will add the caveat that I'm not sure it's the best for growth. Plant-specific bulbs usually appear more pinkish.
I currently use an 8 bulb t5 ho fixture. I run 4-6700k 3-10,000k and 1-20,000k and i really like the way it looks. The 20,000k was kind of a random decision, but since i added it the transparent fins on my angel fish have had a lot more visible color.
45 Gallon Hex- Pressurized Co2, High Light, 2 Angels, 1 Black Knife
20 Gallon- No Plants- Beta
29 Gallon- No Plants- Guppy Breeding
55 Gallon- Low Tech Sand Bottom and Bamboo Garden
55 Gallon- Low Tech Java fern and Moss- RCS Tank