Thanks for the feedback. I will indeed be going with something in the 5000-5500k range for my aviary. The only natural sunlight they really get is for a few hours as the sun heads to the west side of the house, so they will get a little natural sunlight, the rest will be fluorescent during the daytime.
Found a pretty good deal here:
http://www.amazon.com/Spectrum-Fluorescent-Diameter-Temperature-F32T8/dp/B0002IM3PK/ref=pd_cp_hi_1Thanks