I have tested the WRT ST 172 with SRT binder. It is much easier and playful, not as much energy without the WRT plate and race binding. To me there is a huge difference between the 2 bindings, I'm not sure everyone would feel that way, but I notice it. The precision with the Full WRT race setup is unreal.
The Laser SLw/SRT12 is tighter as expected and even more playful, but not as powerful. It is also better in moguls.
Is there a big difference in the laser GS with and without race plate? I kind of want the GS but less exhausting and more manoeuvrable. I could downsize from 180cm to 175cm or I could forego the SRT speed race plate - or both? Would I have a much easier, less tiring and more playful ski? What I really liked about the GS was the edge grip and how it pulls hard you into a turn and was exciting to ride. I'm sort of thinking of a setup somewhere between the GS with race plate and the SC without. I really appreciate a lot of edge grip for the hard pack pistes I ski but also the slopes get quite messed up so sometimes something as narrow as 65mm struggles with that.