There are 2 versions because when all of the advanced palettes are displayed there are so many that it can get tedious to scroll through all of them. So the basic palette exists with the most common palette items common to most music. The basic work space is a reasonable amount of palettes to scroll through, in my opinion. I have a custom palette that has most of the basic palettes and a few from the advanced that works well for classical music copying. I would guess the idea is to have the advanced palette to be the starting point for creating custom work spaces that have both functionality and display. Allowing the custom work spaces enables the user to add very uncommon items that are not otherwise included in the advanced work space.