No to both I'm afraid.
The wheels are particularly bad purely from a quality point of view. A friend had a set on his Vectra SRI diesel and within a week the front two had numerous flat spots. He took them back to Halfrauds, kicked up a fuss and had two new ones fitted. A week later, the same happened again so back to Halfrauds. They sent him to Motor Sport Wheels who were the suppliers. MSW said it was a common problem as they couldn't cope with the extra weight of the diesel engine due to the softness of the alloy and the firm suspension!!!