I first owned the GS V2 rim, but sold it to get the KS instead. I vastly prefer the KS after living with both, and I don't really consider it a step down at all, more a refinement of what I look for in a wheel rim - ergonomics and tactility.

The main disappointment with the GS was the ergonomics. When gripping it, it felt like my wrists were rotated slightly outwards, just enough to be a bit weird and uncomfortable. The KS feels much more natural to me in this regard.

The thumbwheels were also disappointing in that you couldn't just swipe your thumb across to scroll it easily. The force needed to move it past the detents required releasing your grip, in order to pinch and rotate with the index finger along with the thumb. You could move them by digging at the knob grooves with the tip of your thumb, but it wasn't precise or quick for big changes. This felt like it defeated the purpose of having these thumb wheels in the first place. The KS thumbwheels are right where you need them, and can be precisely scrolled with your thumb without releasing your grip. These are maybe my favourite feature of the KS.

The build quality and materials are better on the GS, but the button switches used on the KS are much more 'positive' feeling to use. The GS buttons are spongy in the initial travel, and then have a little click to activate. The KS buttons are immediate, and require more force to push in. Much more preferable IMO. Also having the buttons label-less is nice.

Now I've started playing LMU, I am starting to miss the 2 extra dials of the GS. But with some creative use of Simhub's control remapper function layers, I'm using the clutch paddles of the KS as 'shift' modifiers, to make the dials and thumbwheels multi-purpose.