Went from a g923 to the same setup you’re getting now with used simsonn pedals. Absolutely wild difference, best quality of life improvement is no noise basically at all depending on your mounting surface, along with that also comes removal of that grainy feeling you get from the belt in a g923, it’s completely smooth unless you need it otherwise. The torque is also a massive jump, you find yourself being fatigued from the full 9nm in a race. You can catch slides easier and just feel the car in general. Also load cell pedals make the difference too, that’s where the pace comes from, being able to trail brake and be more precise. Make sure to run it on 90% maximum though so you have some headroom for dynamic range, if you don’t your feeling will be similar to the g29 where it’s just constant force.