Will you be using it in snow? Or is this a summer only vehicle and the most it is going to see is rain?
I have loved all of the Michelin tires I have ever had. I like the fact they have full tread depth sipes and this helps maintain traction performance even with lots of miles.
My 1 ton Express van had Bridgestone V-Steel Rib 265 tires on it. Surprisingly, this tire was very good in the rain and even in the snow. I was on track to get at least 60k miles out of them. I am assuming my van probably weighed more than your Yukon will, so maybe they wouldn't be as great on your truck.
Be careful stepping up a size or even two. The OEM wheels on your truck were designed for a 245 tire. Yes, there are lots of people out there that have gone to 265 or 285 tires...I can tell you I didn't like the way my 2004 2500 Suburban handled with 265's.