Thrustmaster Open wheel and P310 Competition wheel ergonomics

[moby323]

Im thinking of changing my t300 rs wheel for either the open wheel or the p310 competition wheel. My goal is improved ergonomics. Even after a lot of effort to adjust my wheel position and distance to what they should be, I still get shoulder/hand pain after long racing sessions.
I’ve read that the open wheel is more ergonomic because of its shape, and also that the p310 is more ergonomic because of its larger size (30 cm vs 28cm)

Have any of you tried these wheels and have thoughts about how they compare to the standard 28cm thrustmaster wheels?