Quoted from Blackbeard:Go retro warm white for GI
I have yet to see a good warm LED. They all seem to be too green.
Quoted from RobT:Bottom line: you are going to have to find out for yourself! You will need to try various LEDs and decide which look and brightness that you prefer. Get some sample of several different types of LEDs and take it from there.
+1
I think this extends to deciding those that aren't changed to LED. I have many incandescent lights left because I want the warm white
Overall I find the LEDs will be somewhat brighter anyways. If you mix, say, retros with super brights, you may find that the light broadcast ends up unbalanced - being brighter in some areas and not so in others.