I just don't get these recent threads.
Despite reinstalling, editing my hotas sliders to every possible combination, putting 'the missing 0' in my conf.ini, keeping above 400kmph and staying high, I still can't turn any of the Spits in a combat turn without the **** thing flipping over. On *my* PC the Spit is the worst aircraft in the game; virtually unflyable. It makes me very sad to hear how other people are able to get such good performance from it, because it probably means that it is something that won't get 'fixed' in the next patch.
Depending on where in the world your from, the Spitfires is often said to have been the best fighter of WWII. The Spitfire was streamlined and optimised for fast turning and tight controls. This makes it ideally suited for the kind of flying and dogfighting we are seeing in the game. In real life, it has hampered by low fuel load and lack of pressurised cockpit.
If you like the Spitfire now, you should have flown it a patch or two back. It was a sheer delight to fly, even in tight manoeuvres. Now, it has a nasty stall that I haven't seen mentioned historically, but which seem to be a feature of the global FM (Mustangs are suffering from the same malady).