[CJE]

May I add my two cents to the original question?

The Me 262 was already an outdated model when it first became operational. Its design dated back to the late 30s when absolutely nothing was known about high subsonic flights - not to speak about supersonic flights.
Had war kept raging on in 46, it would have been superseded by more modern types embodying the latest state-of-art technology and aerodynamics.
The subsequent development of the 262 would have been a dead-end issue, because its basic design was just not good enough to make it a potent warplane - something it NEVER was.
Spotting a Me 262F or G or whatever over Korea is just a teenager silly joke.
On which side, incidentally?