I have blue on my reef tank and white on the other tank. they are totaly different and it definately depends on what's in the tank. If you have stuff that will "glow" under the blue light then I think that is the "cooler" way to go. But I would go with the flashlight test first to see what you like. I'll see if I can take pics if you want to see the difference.
Sorry no real help but it comes down to personl preference.