Having hit the Bio 200 Lite and the YTPM, I would make sure that you demo both of them.
The Bio has a little bit more power and plow, but it has a sweet controllable feel to it. Spin and directional control come easily, and I cannot say enough about this racquet's feel! It also made flat shots a breeze. The Prestige is a great racquet because you can blast just about any shot you want to and it will go in, along with the added effect of being able to produce very heavy shots. It has the comfort of being a flexible racquet without having huge flex-just a plush response. It also has great access to spin, and you can literally hit just about any spot on the court.
As for serving with both racquets, the Bio 200 Lite took a little time to get used to swinging, as it swung a bit slower. However, it absolutely crushed the ball on serve. The Prestige, on the other hand, swung very fast, but somehow has some delicious serving magic-serves just fly off the racquet and will go anywhere you tell them. Highly recommend you try both frames.