Hello
I made my choice after pondering the question a while, in fact my favourites are Spitfire Mk VIII, which was designed for Merlin 60 series engine and not an emergency solution as Mk IX, and P-51B, closely followed by 109G-10, Tempest, La-5FN, Ta-152C, Spitfire Mk XIVE and late P-47Ds. Not able to choose neither of my two favourites I at end chose Spit XIV, after all Mk VIII with 2-stage Griffon with some strengthening. Not so nice plane to fly but with more raw power.
Juha