i purchased a set of M5's before they were on sale, and i thought they were a great value then. now that they are discounted, that is a smoking deal! i not only use these for my race days, but my trainer wheels as well. they are a great depth for an all-around wheelset. at 55mm they are plenty aero, but dont get blown around with a small amount of cross wind. i did notice some noise as the brake pads were bedding into the rim, but after thoroughly cleaning the brake track in addition to riding a few miles, the noise subsided. i also paid mind to my braking technique so as to minimize any heat build up. the hubs that the hoops are built on are mercury branded, and they roll smoother than my old Zipp hubs. the spokes arent listed in the build information, but i believe they are Sapim CX-Ray bladed spokes. all in all, this is a rad wheelset. they corner great, and the acceleration is second to none. i would definitely recommend.