Warm White Or Bright White Light?

well one of my 2 ft flourscent lights burnt out it was a cool white one but now these lights are only used for flowering so should i get a warm white? but i know mixing spectrums is better, i also have 3 cfls and 2 are warm and one is bright white, so my quesion is should i run 2 flourscent warm whites and two warm cfls and one bright cfl or should i run 1 warm flourscent, 1 bright flourscent and 3 warm cfls? what combination would be the best or does it not really matter much? thanks..

I was wondering about mixing warm whites into my grow also.
Anyone?

Where can i find the warm cfls? not walmart or home depot unless they were out. all they had were 6500k.