WW I Fighter - SE-5A, it just "looked" right. Something about an aircraft of that period that was so well behaved in the air that it would allow the pilot to change drum magazines for the Vickers-K gun mounted on the top of the upper wing during a dog-fight. The SE-5A had two machine guns one fixed firing through the propellor the second mounted to fire forward and upward (the angle could be changed by the pilot to suit his preference). In a fighter to fighter engagement, the K gun meant that to get out of any attack from and SE-5 you had to dive, unfortunately that meant that the SE-5 pilot still held the advantage of altitude. Against bombers the K gun meant that the fighter could attack in the bombers blind spot - astern and below.

WW II Fighters -
Hawker Hurricane - it did the job exactly when needed.

Spitfire - beautiful aircraft - except on take-off or landing, it transformerd through 24 different marks, more than doubling it's weight and enhanced performance, but still retained it's beauty - pilots loved it.

North-American P-51D Mustang - truly remarkable aircraft in terms of range and performance, British design, only came into it's own once powered with a Rolls-Royce Merlin engine.

Focke-Wulf-190 - best German fighter aircraft of WW II, performance was astounding.

De Haviland Mosquito - fighter, fighter-bomber, bomber and passenger aircraft. Carried the same bomb load (4000 lbs) as a B-17 Flying Fortress. Absolutely beautiful aircraft, again the pilots who flew them loved them. One of the "passenger" types (completely unarmed) flying the "ball-bearing" run from Sweden was recorded by German air-intercept radar doing 600 knots on the run back to the UK - did that by climbing to maximum altitude over neutral Sweden then diving for home - the Germans had nothing to catch it.

Post WW II

Hawker Hunter
McDonald-Douglas F-4 Phantom
Mig-29
F-14 Tomcat
F-16.