Supermarine Spitfire.
Elliptical wing design meant not only a distinctive shape in the sky but also a faster aircraft than, say, the Hurricane.
Adolf Galland rated the Spitfire so highly he told Goering 'Give me a squadron of Spitfires'. - Here's a quote from his book The First And The Last:
"The theme of fighter protection was chewed over again and again. Goering clearly represented the point of view of the bombers and demanded close and rigid protection. The bomber, he said, was more important than record bag figures. I tried to point out that the Me109 was superior in the attack and not so suitable for purely defensive purposes as the Spitfire, which, although a little slower, was much more manoeuvrable. He rejected my objection. We received many more harsh words. Finally, as his time ran short, he grew more amiable and asked what were the requirements for our squadrons. Moelders asked for a series of Me109's with more powerful engines. The request was granted. 'And you ?' Goering turned to me. I did not hesitate long. 'I should like an outfit of Spitfires for my group.' After blurting this out, I had rather a shock, for it was not really meant that way. Of course, fundamentally I preferred our Me109 to the Spitfire, but I was unbelievably vexed at the lack of understanding and the stubbornness with which the command gave us orders we could not execute - or only incompletely - as a result of many shortcomings for which we were not to blame. Such brazen-faced impudence made even Goering speechless. He stamped off, growling as he went."
Some others worthy of note:
P-51D Mustang - great escort fighter from the US.
Bf-109 - Primary German fighter of WW2
Fw-190 - Replaced the Bf-109 around 1941/1942.
Hawker Hurricane - massively outdated even when it entered service.
@ole man & firefox . . . There is no denying that the Mustang was a great fighter and I have said as much above. In MY opinion, the Spit was marginally better. Go to any air show and see the number of people who turn their heads at the roar of the Spit - you just don't see the same reaction to a Mustang - at least, not on the same scale! If the Spitfire were to lose the "best fighter" argument, then it must win the "best known" and "most revered!"
I guess we are going to differ in opinion and, as patriots, stick with the aircraft from our country! Hey - isn't that what this debate is all about? ;-) Great question!
@Firefox . . . Some more info - the conclusion says it all, really!! I found the following declassifed Secret Tactical Trials report from RAF Wittering in Jun 1944. You can view it at http://www.spitfireperformance.com/spit14afdu.html (where the Spit is also measured against other airframe types!). . .
TACTICAL COMPARISON WITH MUSTANG III
Radius of Action: Without a long range tank, the Spitfire XIV has no endurance. With a 90 gallon long-range tank it has about half the range of the Mustang III fitted with 2 x 62 1/2 gallon long range tanks.
Maximum Speed: The maximum speed are practically identical.
Maximum Climb: The Spitfire XIV is very much better.
Dive: As for the Spitfire IX. The Mustang pulls away, but less markedly.
Turning Circle: The Spitfire XIV is better.
Rate of Roll: The advantage tends to be with the Spitfire XIV.
Conclusion: With the exception of endurance no conclusions can be drawn, as these two aircraft should never be enemies. The choice is a matter of taste.
Enjoying this debate, thanks!!