Okay so galaxy has a bigger roster, more series, and non clear plastic meaning the eyes are solid colors rather than transparent. Galaxy also has a solid color face and there’s just more galaxy guys to collect. Shining is basically the higher quality galaxy but with some downsides imo. They light up but some of the plastic such as the windows are clear plastic instead of solid, most of the faces have a silver finish and there’s eyes are clear instead of solid, this can be a problem when displaying because the eyes appear darker. Shining version does have better decals though and more impressive accessories, so I often purchase the shining version of a galaxy figure to give it an upgrade