It is, of course, a matter of opinion (and you know what they say about those) but having tried both I can tell you that they are not even similar. The 500 is more powerful, has less control and is a vibration monster compared to the 500 Tour. I hated the 500 but the tour is my main stick and I love it. The one caveat is that it is a bit stiff and has given me the only bit of elbow discomfort I have ever had. In fairness, however, I should say that I string the racquet at 69 lbs. with Topspin CyberFlash which is, in all likelyhood, a contributing factor.