I have been demoing the Yonex RDX 500 and the Prince Diablo. Both scored highly in the TW reviews. A couple of caveats - My elbow is not completely well yet, so I'm serving with essentially a straight arm and can't hit spin serves and I played today after taking the kids to Water World, so I was pretty tired. Also my slice backhand has deserted me no matter what racket I used. I have lately been using my 20th Anniv. POG with a lot of weight on it. Both rackets are over an ounce lighter than what I have been using. The Diablo is a strange feeling racket. I think of a block of rubber so hard that it doesn't bend, but damps out almost all the vibration. It does feel quite a bit like my old CTS Graduate 90, but ligher, stiffer, and yet more damped. Even though it is so damped, I can still get a good feel for the ball. Strange, yet good. The RDX500 did have that usual Yonex somewhat springy metallic feel to it. The Yonex does seem to pocket the ball and throw it, something the TW review pointed toward. Not irritatingly, like a Vokl Catapult, but comfortably and controllably. For groundstrokes, I think I got a little more power out of the Diablo, especially on the forehand. I had a lot of troubles getting the racket face angled on the backhand with the Diablo (into the net, then high into the fence). It could be the 2 overwraps on it to build the demo's grip up, but I didn't have that trouble with the Yonex in the same condition. Both rackets provided a lot of spin when I tried to hit with big spin (I generally hit flattish with my Continental grip). The Diablo seemed to do a bit better with big flat forehands. I felt the Yonex was more comfortable on touch shots, angled spin shots, etc. Volleys were very nice with both. I think I volleyed better with the Diablo. I got more power with it and it seemed more solid. Once again, the Yonex seemed to have more touch, and certainly enough power to stick a volley. I thought the Yonex might have been more maneuverable. I seemed to return serve with the Yonex better, probably again because it felt more maneuverable. Still, the Diablo was good. I was surprised how much power I got from serving with both these rackets. Maybe I got a few more 1st serves in with the Yonex. Even with an abbreviated swing, using just wrist and hip I could get the velocity into the 100's with either racket. Without a full swing, I couldn't get much faster with my normal heavier rackets. As far as match play, the results were similar with both rackets. After I was done testing and then played with my regular rackets for a test, I went to the Yonex. I think it was a bit easier on my (by that time) quite tender elbow. If I'm playing well and hitting hard I might go with the Diablo. If I'm not on, I would go with the Yonex. Also, I have some questions. How sensitive is the Yonex to string type and tension? It seems like it could be sensitive to that. Does it eat strings quickly? What about the Diablo and strings?