I am from the east coast and have recently purchased a Ruby Red/Black ES350. I am very happy with my choice. I was curious though about the tire brands that are on the ES 350. In the East coast they put on the Michelin Energy tires . While in Las Vegas I noticed that they put on the Toyo Proxes. Is there any difference between the two. Are the Michelin's better for East Coast weather conditions. Just curious if anyone can shed any light on the differences.