I had all 3500/80 chips to start with.. Wanted a little more red in the spectrum after seeing some direct side by side grows with 80 vs 90 cri.. If i could go back i would get all 90cri..3000/3500.. I couldn't find any 3000/90 at the time so i just got some 2700/90's for the center.. You can definitely see the difference when looking up at the cobs. From comparisons ive seen you can shave a week or more off your grow time with 90cri...Tons of info on this subject on RIU..
Cheers