Kind of a personal preference thing. Some colors look better under a 10k like as opposed to a 14k-20k spectrum. I like the variety...with more of a daylight look during mid-day...and blues during morning/evenings. Best thing to do is look at peoples tanks and see what you like.
Hey thanks, I appreciate all those responses!
I only have shrimp, urchin and snails right now. This is a sunlit tank and I wanted something to look at the tank after the sun goes down, so this will be mostly for the winter. Blue Plus it is!