Bluto, the Bf 109 G2 is an
excellent turn fighter.
Use of flaps is a must and it is definately a great fighter to learn.
Do not write off the 109s as 'BnZ' monsters, even the late-war 109s turn very well when flown correctly.
The earlier the 109, the better the turner.... the later the 109, the faster.
Jump in a 109F or G-2/G-6 and watch Spits and lots of other good turners fight to turn with you, you'll be surprised.
Even the 190 A5 can turn pretty well... not in the conventional flat turn sense, but the exceptional roll-rate can help you 'out-turn' many aircraft simply due to the fact that you can roll and start your turn much earlier... then roll back to the opposite direction and repeat.
Take pleasure in the 4 x 20mm blasting of an aircraft that tried to turn with you and overshot because they could not follow you quickly enough.