GX and the XM generator are very capable generators. They can both run the Spooky2 presets for Plasma, Contact, Remote, Coil and Cold Laser. They can also reach all the frequencies that are in the Spooky2 database.
The XM generator has a long history of reliability and performance. It is a great choice for most people. It is easy to create a multi-generator setup at minimum cost.
GX was developed to have more features, like a higher frequency range, Modulation, high-speed gating and stand-alone operation, which allows you to run programs without a computer. It is our top-of-the-line generator, and will not replace our popular and economical XM generator.
For more details, please read this blog: https://www.spooky2-mall.com/blog/what-is-the-difference-between-generatorx-gx-and-the-xm-generator/