I'm approaching 44,000 miles on the EOM Bridgestone Ecopia 100 tires that came on my 2010 Prius IV. I've been following the various tires threads in the past preparing for the day when it came time to buy new tires. While that day is still a bit away I thought I'd begin looking around to see what was available and at what price. I took a list of what I'd gleaned from my readings here as the top 4 tires for the Prius by my local tire dealer and all 4 are available - Bridgestone Ecopia, Michelin Energy Saver, Goodyear Assurance Fuel Max, & Continental Conti ProContact. The Michelin is by far the most expensive, $300 more than the other three. I'm quite pleased with the mileage I'm getting with the Bridgestone (51 - 53mpg) but the road noise is a little much. Would the Michelin's give a significantly quieter ride? And, comparable or better gas mileage? I'm trying to determine what I'd get for the extra $300.