WC1: The Hornet and the Rapier
WC2: The Morningstar and the Sabre
WC3: The Excalibur and the Arrow
WC4: As above, plus the Dragon
WCP: The Tigershark and the Panther
Privateer: Centurion, hands down
WC I: F-32 Hornet and F-44 Rapier
WC II: F-44 Rapier II and Ferret (Only flown the Ferret)
WC III: Hellcat and Excalibur
WC IV: Banshee and Hellcat
WCP: Vampire and Panther
I strongly agree with Eder and Viper too, the Rapier from WC2 is also my favorite: it looks beautiful. The Dragon/Lance looks cool, so does the Scimitar but the Rapier is just beautiful (especially Eder's )