There's a huge price premium if you want the thinner and sexier looks of the GS65. But if you're only after performance, then the GE65 can save you nearly a grand while being almost as portable.
https://www.notebookcheck.net/MSI-GE65-performs-about-the-same-as-the-GS65-and-it-s-over-700-cheaper.448227.0.html