I have the CSP V2 and T500RS with the bushings. Currently run 2x70 I believe. I can´t say which are better they both perform so well it´s mostly just preferences. The throttle on the Fanatec is a bit smoother but I haven´t really seen this reflected on track. As for brake you can get a stiffer brake feel with the T500RS pedals. Both give a good progressive resistance so I can´t say one is better then the other. I am a bit afraid the smaller rubber on the CSP V2s will wear out though may require more maintenance not just the load cells.
The T500RS pedals integrate better with my feets in my cockpit. And I can adjust the pedal position and angle in exact every way both pedal and seat. This was lucky because I had problems finding the perfect position for my clubsports. I am quite stiff so the long throttle mainly lead to some issues where I still wanted it like that but had to find just the right angle where I could handle it
.
I suppose a lot is the over hang position I felt the same way with the CST pedals when I had those despite I probably simraced more with floor standing pedals then driven real cars with hanging
The only transition I think you will find really hard is the clutch. It´s just another throttle.
Also another thing sometimes I feel I loose ffb strength when using the CSP pedals instead of the T500RS. If it´s due to the T500RS being identified as number 2 or some kind of game bug. But it´s generally not an issue since I seldom run max ffb out of it anyway.
Get the T500RS and try it out then decide is the absolute best. CSP do feel a bit more rigid in their construction and look a bit cooler. Depend a bit if you are after the performance or if other factors is important too. On the other hand all this metal on metal on the CSP mean you have to lubricate them to keep it quiet and they do collect dust very easilly. the T500RS pedals is more protected and also you won´t have to replace load cells on them.