Please vote for one of the following four options.
1.  Battle of Britain.  Britain's finest hour.  Spit I's, Hurri I's vs. 109E's, 110C's, He 111's, and Ju 88's.
5.  Late-war 8th AF.  8th AF strategic bombing with high-alt escorts vs. high-alt Luftwaffe.  Like DGS/BOG.  P-51, P-47, P-38, B-17, B-24, 109G-14, 109K, 190D, maybe some 190A-8.
17. Summer 1941 RAF raids against Luftwaffe in France / coastal areas.  "Johnnie Johnson describes it as the most brutal air fighting of the war."  Spit I/V vs. 109E/F.
40.  Hell Over the Hinterland.  The Battle of the Bulge is about to see its first day of clear weather in two weeks. P-51D, P-38L, P-47D-40, Spitfire XVI, Spitfire VIII, Typhoon Mk IB, Tempest V, Mosquito VI, BF109G-14, ME109K-4, FW190A-8, FW190F-8, FW190D-9, TA-152, ME410, BF110G-2.