Different helmet. Turtle and shrug with 30mm and see how that feels and looks.

I can't see much difference either. It could be that you are holding your shoulders differently to compensate. Your back appears less rounded with 30mm, though it's pretty flat in all of them. Do you feel your thighs impinging on your torso at all?

I reckon I can see you stretching your shoulders to reach the lower bars. i.e. back position hasn't moved, but shoulders look more relaxed at 30mm.

It doesn't help that the camera moves a bit between takes. Do you have a tripod?

And dare I say saddle too high?

#totallyunqualifiedopinion

Stay where you are, he has done a decent job.

This:
Also, what bar is that? Zipp? Pedestaling the extensions instead of the whole cockpit looks cleaner and may be faster. If that is possible with what you have. Like others have said, the position looks good, but you can improve without changing the contact points: helmet, shrug, and pedestal extensions instead of the stem.

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