Aeroplane Heaven's Bf-109e and Morton's AH modifications for the AH Hurricane and Spitfire (BoB-era) are must-haves.
Groundcrew's He-111 is still a standard as well as Krystof Malinowski's Ju-88s.
Wolfi's Stuka model is also a must, along with Thicko's Gladiators, Blenheims, the Alphasim Swordfish, Morton's Burnage Hawker Typhoon mod, Captain Kurt's Bf-109s, Paul Rebuffat's Spitfires, Team Daedalus' Fw-190 set, thicko's Short Sterling, Dornier Do-17 set, and Morane-Saulnier Ms-406, Stiz's Handley-Page Halifax, Bismarck13's Beaufighters, Bloch 151/152. Dewoitine D-520, and I could go on...
Are you looking for USAAC aircraft as well?