I went with the Michelins... I like them much better than the originals. And all their ZP (runflats) come with the road hazard included.
For the Vette I bought them at Discount Tire, took the on-line ad in and they came close enough for me to buy them.
The second set I bought for the XLR, ordered them on line (Tire Rack) and looked for an installer... picked it out and got a call the same day saying the tires would be there tomorrow from their warehouse. Great experience.