Today's "high-performance" airplanes are like old fashioned muscle cars... old fashioned airframes (1930's technology) with big engines. They are typically very draggy and don't need speed brakes for approach control or landing. Small speed brakes are sometimes helpful to reduce cooling problems with those big engines.

With rising gas prices, we're going to see a shift towards more efficient airframes. The "high-performance" airplanes of tomorrow will be very motor-glider like. Performance will come from efficiency rather than high power. These clean machines will need large speed brakes (not little precise flight devises) for approach control and to reduce floating in ground effect. In the future, big speed brake, more than big engines, will indicate a high performance airplane.

PS - Once you get used to them, speed brakes are pretty awesome. They tame even the most slippery airframe and give you exact control of your approach.