I am about to replace the OEM tires on my 04 Prius and I am looking for a better replacement tire. So far I have reviewed all of the posts and I can not seem to find a recommendation that meets my needs. Hopefully someone out there can help. I live in Arizona so I need a tire that can handle high temperatures, give a smoother and quieter ride, and not decrease my gas mileage. Am I asking too much????? So far, I have seen posts for: Comfortred, Hydroedge, and Nokian. All of the posts talk about the handling in snow and rain (both in very short supply in Phoenix). All posts, except for the Nokian, say that gas mileage will suffer. Should I just replace the old OEM's with new OEM's? The Toyota dealership says Toyota picked the best tire for the Prius and I should not "mess with the experts". Thank you for any suggestions you can share.