I ran Michelin LTX series tires on a '99 Blazer and got almost 60K miles out of them, which is unheard-of mileage for me. When they got down to the last 10% of legal tread, they got very slippery even though they still had tread, so I replaced them with Kumhos before they were technically "worn out".
The Kumhos were a very good tire; quiet, decent traction, and also pretty durable. I was impressed with them - they offer a good value for the $$.
I have run Michelins a number of times and always had good service from them. One thing that I have noticed about all the Michelins I've had is that their highly flexible sidewalls allow the car to shift sideways just slightly when entering a corner - it feels like the sidewalls are "taking a set" to the side, and it's a bit unsettling until I get used to it. I haven't felt this slight sideways motion with any other brand of tire.
The '07 Murano I just bought had a brand-new set of Firestone Destination LE tires, and after a month of driving alternately on deep snow, packed snow and bare pavement (hey, it's winter in Colorado!) I'm feeling good about them. I'm running 40 PSI in them all around and the ride is still good.