The mouse wheel clicked almost as easily as the left and right buttons. And is rasterized pleasant. Still not clicking it accidentally. Perfect! Many mice it takes the wheel a lot more pressure from left / right button, what a completely out of the concept brings (fine motor => gross motor skills).
The thumb buttons are not to feel sooo great, the other manufacturers have better solved. The right two buttons (mirrored thumb buttons) are really not to be used as a right-handed. Hoping first that goes anyway ...