Sorry for the bump but I thought that I would share my experiences with Pim-Pim's racket. I too now have an RDX500 mid with the RDS001 PJ.
Right, sort of. When I first hit with it I was really surprised at the way it felt and thought it would be very close to stock, specswise. Playing the stock and the pro stock version side by side, one can obviously feel the weight difference. I've played with a bunch of leaded and "unleaded" heavy racquets over the years, but seldom have I found a more well-rounded and maneuverable racquet. So, playing it on its own it doesn't feel very heavy, side by side with a stock racquet you do appreciate the solid feel.
I noticed a similar thing when playing with one of Pim-Pim's rackets. They felt heavy to hold and I noticed the mass when swinging them but in terms of making contact with the ball, it was easy to be on time, contrary to what you would expect with most heavy frames. When you actually struck the ball with this racket, it had an incredibly solid feel. To my hitting partner I described it as being like a big pillow. There was hardly any noticeable vibration but despite the cushioned feeling, feel at the net was rather good.
For any of you who are interested, here's a review;
Let's start off with some background on me and my playing style. I play an attacking all-court game with my forehand being my main weapon off the ground; my backhand in general is nowhere near as good. Some people have said that I play a big man's game without being one in that I really enjoy going after the ball and hitting the cover off it. I'm not really the typical build for an attacking player, being quite short but I have been able to make it work well.
I strung the racket with Pro Supex Blue Gear 1.25 at 32lbs and overgripped the Yonex leather grip with Gamma Supreme; I used a Luxilon Vibra Killer dampener and played on an outdoor carpet court.
Groundstrokes:
Forehand - At first, it has to be said that I was rather underwhelmed with the forehand and indeed, groundstrokes in general with this racket, it felt completely powerless and dead. Then, after completely crushing a short ball, I saw the light. I couldn't make sipnny groundstrokes work with this racket but when I hit flat, it worked beautifully. From then onwards, I set about trying to punish almost everything with hard, flat strokes. In the past, I played like this all the time but then sacrificed some pace on my strokes to gain some consistency. With this racket though, I was able to retain good consistency and still crush the ball with flat shots.
Backhand - With my Wilson rackets, I managed to sort my backhand out; it became consistent and somewhat of a weapon but with Pim-Pim's racket, my backhand went away again. I just wasn't able to find my backhand at all today. Perhaps it was just an off day but it really didn't happen for me today, I just couldn't find any consistency with it.
Volleys: As you would expect really, this racket volleyed very well. It was so stable and made it incredibly easy to direct the ball away from my opponent. The only drawback of this racket at the net was that some more power would perhaps have been nice for hitting some of the more difficult half volleys where the ball doesn't have a lot of pace.
Serves: I haven't had a chance to hit many serves with this stick yet but the ones I did hit were quite pleasing, I was able to generate plenty of pace whilst retaining good directional control. The only rackets that I have used that have been similar to this one in terms of power generation on the serve are the Babolat Pure Drive and the Prince Extender Ripstick 800PL, both of which I found too powerful to be comfortable using for anything other than the serve.
That's basically all the feedback I can give based on today's hitting session, if anyone has any questions, feel free to ask them. I might make some updates after hitting with this frame some more.