"Another Spitfire"! The reason why the Firefly was developed and used for so long is mainly that all lend lease US types serving with the Royal Navy at the end of WW2 were returned to the USA or destroyed under the terms of the lend lease agreement. Britain was all but bankrupted by the war and replacements had to come from within the British aircraft industry, hence the adoption and retention of types that were shall we say, slightly less than state of the art. Also the "new" jet engines had extremely poor acceleration performance and could not deliver increased power for an overshoot quickly enough to avoid an accident. On the smaller carriers of the Royal Navy this was a major issue and resulted in the propellor driven Sea Fury soldiering on whilst the US navy flew Panthers and Banshees. It must be said however, that the Firefly has been described as "A waste of Griffons".
Interesting stuff carrier aviation, if you want a real laugh at the way we Brits do things, take a look at how the turbine acceleration problem was handled with the Buccaneer! Feel free to laugh, we do.