Neiuport 17, for its manueverablity;
The SE5A for its speed;
The S.P.A.D. XIII for its durability;
The Fokker Driedecker for its climbing ability;
The DeHaviland DH-2 for it's unusual bathtub apperearance;
The Fokker D-VII and the Sopwith Snipe for sheer performance.