the old adios was a good shoe (and the adios 2U, as well). i love the rotterdam and don't want to downgrade to a FLAT for a marathon or for tempo runs, but i want something lighter
what do you think? how heavy is the ROTTERDAM v. ADIOS and why is ROTTERDAM classified by Road Runner as "STABILITY" ?
i'm 140-150, bad achilles and just trying to up mileage, nothing special