I’ve got no experience with Lutron, but have put C4 lighting in 4 homes at this point and unless something changes, I’ll do it in my 5th home (which is planned but is inevitable).
It is rock solid and out of what is probably close to 1,000 dimmers/switches/keypads (spanning every generation of product) I’ve had 1 fail, and it was my fault. I love the engravable keypads, the backlit lettering, the customizable LEDs, etc…