Lighting???????? Which bulbs?

[bavass]

I am using the Current USA PC 4x65w 260w on my 55g. I am going to replace the bulbs and trying to figure out which to buy? I provided links to each if you want to look at them. I am going to get 2 Dual Actinic 420/460nm SunPaq along with those I am trying to figure out if I should get 2 Dual Daylight 6700/10,000 SunPaq or 1 6700 and 1 10,000 or 2 6700 or 2 10000. What is the best option between those? I currently have 2 420/460 and 2 6700's.