Since I already have the GAN R, I decided to get the RS to see what the difference between the two cubes are. Immediately I noticed the different texture, like the GAN XS. It has a bumpy feel but not glossy feel like the older GAN cubes. At first I didn't really like the texture, but after mors solves the texture goes away and gives you much more grip then the gossy feel. After I started turning the cube, I noticed the same feel as the GAN R the same smooth but slightly crunchy feel. I really enjoy that feel. I noticed the different spring adjustment kind of like the GAN XS.
Overall this cube is really good.
It is a great budget option for many cubers.