When conditions are safe (meaning I have room to run) I let the RPM's go up. But I have found the more one on one instruction the more disciplined I've become in keeping my escape routes open. There are so many distracted drivers now it's really unbelievable. They're easy to spot at night because the glow of their phones light up of their faces. That being said, after spending nearly $20K keeping the car well maintained, I generally try to follow the Jackie Stewart school of driving which is to be as smooth as possible with the throttle, use the brake very little (simply lift instead of slamming on the wide pedal), match the revs, and try and try not to upset the balance of the car. One thing I wasn't doing right was was keeping the revs a bit too loo on the highway while cruising. Not a problem now that gas has come down below $2.