I have Michelin Exalto's 205 65 15 on my 2004 Honda Accord. The treadware rating is listed at 400. I have put 55 thousand miles on them and the treadware is 5/32nds in front and 4/32nds in back. I have them at 36psi in front and 35psi in back because I get about 2mpg more than the recommended 30/29 psi. The car continues to handle well with good ride comfort. I drove in a monsoon the other night where people has hazards on the highway. The car never hydroplaned once. The tire does make a slight pitch sound which became noticable after 50 thousand miles, but otherwise it handles beautifully.
The MXV4 S8 tires, which came with the car got better gas mileage, but silica compound did not inspire quick acceleration and cornering. I have the new MXV4 tires on wife's car. They get about the same gas mileage as the exaltos, not as good as the MXV4 S8 tires. They handle significantly better than S8 tires, not quite as sharp as exaltos, but they provide better comfort than exaltos..
Every tire is a tradeoff. I am pretty sold on Michellin tires though as overall they provide a nice balance of handling, longevity, and ride comfort. I am also glad that have 15 inch tires whereby I can buy a quality tire without obtaining a second mortgage. I posted this before, but excessively large tires, on vehicles like a Honda Accord, Toyota Camry, Chevi Malibu and the like are ridiculous. They wear quicker and the price to replace them is brutal. One is forced to buy a potentially lower quality tire to save money. I would rather have a high quality tire on a smaller wheel than the opposite.