Straight line acceleration, pre 05 911 C4s is about same as the 97 spec NSX. Handling wise, the 911 is more fund to drive around, but you can push NSX to it's handling limit with more ease. 05 911 however, is a complete different animal, I drove my friend's 05 911C, the first gear felt faster, but when we drag the two cars, I beat him; however, the 911CS is a faster car, and the handling is very neutral, therefore, in terms of price point, 2006 911CS is a better value. Here is the kick, I will take my 03 NSX over the 997 911 any day, simply due to the history behind the NSX, and my sentiment towards the car.