I'll fly for the axis, specially with the Luftwaffe. I think the germans had some of the best planes specially fighters ever built during the war like the Me 109, FW 190 and the Me 262. Even they were overwhelmed by the Allies many of those planes were able to fight and stand against those aircrafts.
Many german ace's shot down a lot of enemy planes with the Me 109-F that were becoming old against the P-47, P-51 and the newest versions of Spitfires.