@SpaceManBob , there was a lot of confusion about this. In the comments on the download page, the mod creator stated that the only difference between the three packages is the intensity/brightness of the lighting in the packages. So, it's a matter of preference as to which one you choose.
Try one package at a time to see how you like it, then decide which is your favorite. Once you've decided, delete the other two.
I hope that this helps.
Edited to add: the file that says replacement is the brightest of the three choices.