I have the same size tire (225/50/17) on my Nissan Maxima. I have the Pilot Sport A/S on their, I'm on my third set, and couldn't be happier. I get at least 50,000 miles of (mostly highway) driving out of each set, and the price isn't that much more than the other brands you're mentioning. I second the suggestion to use TireRack to buy your tires, and use one of their recommended installers. I also have had excellent service with Costco, as well as Discount Tire (sometimes operating as America's Tire).