I've run only in Sauconys for at least a dozen years and the TR 3s fit well into the Saucony tradition.  They're a slight upgrade from the TR 2, with more cushioning and support.  They felt comfortable to me the first time I put them on--no breaking in required.  I use these shoes for training and racing in 5Ks up to half-marathons. I agree, however, with the previous reviewer that the color schemes could be improved.  At least the red and gray TR 3s are better looking than the brown and blue TR 2s!