I agree with Chip as well, though with a bit of a different spin. It seems to me that the further you move the engine forward, the more damping the car provides to your steering input. Moving that big lump in the front off of a straight is resisted by inertia that softens the effects of attempts to change direction. Since this is the model that most people are used to, everything else seems edgy.
In general, mid-engine designs are the most balanced (which is not the same as the most 'damped') designs. You can induce over- and under-steer depending on g's, brake and throttle settings. You have to pay close attention but there is a lot of margin to play with - using all of the controls at hand (or at foot). I must admit that I haven't explored the margins in my GT, but I have with other mid-engined cars.
Re the modern P-cars, they are totally dominated by the e-nannies. I have a 997S and said nannies make it possible to drive the car very aggressively while maintaining some margin of error, and I frequently do. OTOH, it isn't a very natural experience. Hard driving with the big mass in the aft end requires the electronics to intervene in an attempt to defy physics quite often, and you can get a sense of the intervention when pushing the car. Non-linear pitching and yawing and a bit of odd lateral rocking are all part of the experience when hustling the car. But it's still a hoot.
Gentlemen,
I am certainly not an expert driver and the only mid-engine cars I have extensive experience in are the Lotus Turbo Esprit and the Ford GT. But to me, the closer the engine gets to the rear of the car, the more unpredictable it gets at the limit, and the faster it'll get away from you when it goes.
The Porsche 911 and all of its derivatives are the cars that make me the most uncomfortable. I have not driven any of the latest versions and perhaps their electronic nannies have done away with the unpredictable nature of that car at its limit. I have twice had a 911 get away from me in a stunningly sudden manner. The Lotus Esprit and Ford GT both have no electronic stability control or traction control. They don't swap ends as quickly as the 911, but they are certainly harder for me to control at the limit than a Corvette or Viper.
Except for those rare occasions when I'm on a track I don't push the limits much anymore. But if I did, especially on public roads, I would rather tempt fate in a Corvette or Viper than I would in a Ford GT or a 911. JMO
Chip